diff --git a/package-lock.json b/package-lock.json
index 0635e7194..4174a63b8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,7 +7,6 @@
       "dependencies": {
         "@citation-js/core": "0.7.11",
         "@citation-js/plugin-bibtex": "0.7.11",
-        "@citation-js/plugin-csl": "0.7.11",
         "@citation-js/plugin-software-formats": "0.6.1",
         "@github/markdown-toolbar-element": "2.2.3",
         "@github/relative-time-element": "4.4.2",
@@ -375,22 +374,6 @@
         "node": ">=14.0.0"
       }
     },
-    "node_modules/@citation-js/plugin-csl": {
-      "version": "0.7.11",
-      "resolved": "https://registry.npmjs.org/@citation-js/plugin-csl/-/plugin-csl-0.7.11.tgz",
-      "integrity": "sha512-4OGZ9wHZDfpgiPU2cOXWGuKt7P+ndGWAeLG95nOG+DXe5U+f9EEZTXfaM4C99x8Ri+g6JklR96A3kuYZxYLllg==",
-      "license": "MIT",
-      "dependencies": {
-        "@citation-js/date": "^0.5.0",
-        "citeproc": "^2.4.6"
-      },
-      "engines": {
-        "node": ">=16.0.0"
-      },
-      "peerDependencies": {
-        "@citation-js/core": "^0.7.0"
-      }
-    },
     "node_modules/@citation-js/plugin-github": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/@citation-js/plugin-github/-/plugin-github-0.6.1.tgz",
@@ -4150,12 +4133,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/citeproc": {
-      "version": "2.4.63",
-      "resolved": "https://registry.npmjs.org/citeproc/-/citeproc-2.4.63.tgz",
-      "integrity": "sha512-68F95Bp4UbgZU/DBUGQn0qV3HDZLCdI9+Bb2ByrTaNJDL5VEm9LqaiNaxljsvoaExSLEXe1/r6n2Z06SCzW3/Q==",
-      "license": "CPAL-1.0 OR AGPL-1.0"
-    },
     "node_modules/clean-regexp": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/clean-regexp/-/clean-regexp-1.0.0.tgz",
diff --git a/package.json b/package.json
index 7e464f70e..3b4902dc0 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,6 @@
   "dependencies": {
     "@citation-js/core": "0.7.11",
     "@citation-js/plugin-bibtex": "0.7.11",
-    "@citation-js/plugin-csl": "0.7.11",
     "@citation-js/plugin-software-formats": "0.6.1",
     "@github/markdown-toolbar-element": "2.2.3",
     "@github/relative-time-element": "4.4.2",
diff --git a/templates/repo/cite/cite_buttons.tmpl b/templates/repo/cite/cite_buttons.tmpl
index 426ca3858..5a6de23c5 100644
--- a/templates/repo/cite/cite_buttons.tmpl
+++ b/templates/repo/cite/cite_buttons.tmpl
@@ -1,9 +1,6 @@
-<button class="ui citation button" id="citation-copy-apa" data-text="">
-APA
-</button>
-<button class="ui citation button" id="citation-copy-bibtex" data-text="">
+<span class="ui citation label primary" id="citation-copy-bibtex" data-text="">
 BibTeX
-</button>
+</span>
 <!-- the value will be updated by initCitationFileCopyContent, the code below is used to avoid UI flicking  -->
 <input id="citation-copy-content" value="" size="1" readonly>
 <button class="ui icon button" id="citation-clipboard-btn" data-tooltip-content="{{ctx.Locale.Tr "copy"}}" data-clipboard-target="#citation-copy-content">
diff --git a/web_src/css/repo.css b/web_src/css/repo.css
index bd2da5fa0..56525aca3 100644
--- a/web_src/css/repo.css
+++ b/web_src/css/repo.css
@@ -2068,11 +2068,6 @@ td .commit-summary {
   line-height: 1.4;
 }
 
-#cite-repo-modal #citation-panel .citation.button {
-  font-size: 13px;
-  padding: 7.5px 5px;
-}
-
 #cite-repo-modal #citation-panel #citation-copy-content {
   border-radius: 0;
   padding: 5px 10px;
@@ -2081,8 +2076,9 @@ td .commit-summary {
   flex: 1;
 }
 
-#cite-repo-modal #citation-panel #citation-copy-apa,
 #cite-repo-modal #citation-panel #citation-copy-bibtex {
+  font-size: 13px;
+  padding: 7.5px 5px;
   border-right: none;
 }
 
diff --git a/web_src/js/features/citation.js b/web_src/js/features/citation.js
index 918a46713..7e26bff27 100644
--- a/web_src/js/features/citation.js
+++ b/web_src/js/features/citation.js
@@ -3,12 +3,11 @@ import {getCurrentLocale} from '../utils.js';
 
 const {pageData} = window.config;
 
-async function initInputCitationValue(citationCopyApa, citationCopyBibtex) {
+async function initInputCitationValue(inputContent) {
   const [{Cite, plugins}] = await Promise.all([
     import(/* webpackChunkName: "citation-js-core" */'@citation-js/core'),
     import(/* webpackChunkName: "citation-js-formats" */'@citation-js/plugin-software-formats'),
     import(/* webpackChunkName: "citation-js-bibtex" */'@citation-js/plugin-bibtex'),
-    import(/* webpackChunkName: "citation-js-csl" */'@citation-js/plugin-csl'),
   ]);
   const {citationFileContent} = pageData;
   const config = plugins.config.get('@bibtex');
@@ -16,30 +15,16 @@ async function initInputCitationValue(citationCopyApa, citationCopyBibtex) {
   config.constants.fieldTypes.version = ['field', 'literal'];
   const citationFormatter = new Cite(citationFileContent);
   const lang = getCurrentLocale() || 'en-US';
-  const apaOutput = citationFormatter.format('bibliography', {template: 'apa', lang});
   const bibtexOutput = citationFormatter.format('bibtex', {lang});
-  citationCopyBibtex.setAttribute('data-text', bibtexOutput);
-  citationCopyApa.setAttribute('data-text', apaOutput);
+  inputContent.value = bibtexOutput;
 }
 
 export async function initCitationFileCopyContent() {
-  const defaultCitationFormat = 'apa'; // apa or bibtex
-
   if (!pageData.citationFileContent) return;
 
-  const citationCopyApa = document.getElementById('citation-copy-apa');
-  const citationCopyBibtex = document.getElementById('citation-copy-bibtex');
   const inputContent = document.getElementById('citation-copy-content');
 
-  if ((!citationCopyApa && !citationCopyBibtex) || !inputContent) return;
-
-  const updateUi = () => {
-    const isBibtex = (localStorage.getItem('citation-copy-format') || defaultCitationFormat) === 'bibtex';
-    const copyContent = (isBibtex ? citationCopyBibtex : citationCopyApa).getAttribute('data-text');
-    inputContent.value = copyContent;
-    citationCopyBibtex.classList.toggle('primary', isBibtex);
-    citationCopyApa.classList.toggle('primary', !isBibtex);
-  };
+  if (!inputContent) return;
 
   document.getElementById('cite-repo-button')?.addEventListener('click', async (e) => {
     const dropdownBtn = e.target.closest('.ui.dropdown.button');
@@ -47,22 +32,11 @@ export async function initCitationFileCopyContent() {
 
     try {
       try {
-        await initInputCitationValue(citationCopyApa, citationCopyBibtex);
+        await initInputCitationValue(inputContent);
       } catch (e) {
         console.error(`initCitationFileCopyContent error: ${e}`, e);
         return;
       }
-      updateUi();
-
-      citationCopyApa.addEventListener('click', () => {
-        localStorage.setItem('citation-copy-format', 'apa');
-        updateUi();
-      });
-
-      citationCopyBibtex.addEventListener('click', () => {
-        localStorage.setItem('citation-copy-format', 'bibtex');
-        updateUi();
-      });
 
       inputContent.addEventListener('click', () => {
         inputContent.select();