janiko

This plugin allows references and citations in your posts. It’s only a beta version, so if you find issues or if you think it lacks some features, please contact me.
To use it, simply add your reference using a shortcode you can choose (‘jref’ by default), and a few attributes (always use lowercase):
<ul>
<li>title (mandatory)</li>
<li>author</li>
<li>date</li>
<li>url</li>
<li>editor</li>
<li>page</li>
<li>lang</li>
<li>readon</li>
</ul>
There are no specific controls on the content of those attributes, you may add any text you want. Only ‘title’ is mandatory. All attributes roles are easy to understand; ‘page’ is for a book (but can be used for any content), ‘readon’ is the date you last consult the reference.
Again, in this first release, there’s no specific control or action triggered by attribute’s content (like verifying the format, or linking to an archive site). Maybe in a future release…
A list of all references will be added at the end of the post.
Here are some examples:
<ul>
<li>[jref]url=http://geba.fr|date=janv 2017|title=The Title.|author=Janiko|lang=FR|editor=geba.fr|page=p.5[/jref]</li>
<li>[jref name=’numref’]url=http://geba.fr|date=janv 2017|title=The Title.|author=Janiko|lang=FR|editor=geba.fr|page=p.5[/jref]</li>
<li>[jref name=’numref’ /]</li>
</ul>
You can optionnaly add a name to the citation, so you can reuse it in your post. Important note: the displayed attributes will be the attributes of the FIRST reference with that name. Any other attribute will be ignored.

JReferences

This plugin adds references and citations functionalities (in a wikipedia-like style).

YoungInnovations

Santosh Thapa Magar

Citation Note plugin easily add, manage, and display citations, references, and footnotes in posts, pages, or custom post types using a user-friendly editor interface.
This is developed to help content creators manage and display content citations or references directly from the post/page editor.
This plugin adds a custom meta box with dynamic citation fields that allow users to: 
– Add multiple citation entries. 
– Remove or reorder citations. 
– Output citations in the frontend or within blocks.
Ideal for blogs, research publications, or any content that benefits from structured citation management.
<h3>How to use</h3>
<ol>
<li>After activate the plugin and select the post type to apply citations.</li>
<li>Go to the edit screen of any selected post type.</li>
<li>Scroll down to the Citation List meta box.</li>
<li>Click Add Citation to insert new fields.</li>
<li>Fill in your citation data (citation number and description).</li>
<li>In the content editor, insert the placeholder (e.g., <code>citation_1</code>) where the citation reference should appear.</li>
<li>Save or update the post.</li>
<li>Use the shortcode <code>[citenote_display_list]</code> or template function <code>do_shortcode('[citenote_display_list]')</code> to render the citation list on the frontend.</li>
</ol>
<h3>License</h3>
This plugin is licensed under the GPLv2 or later. For more information, see https://www.gnu.org/licenses/gpl-2.0.html.

Citation Note

Easily add, manage, and display citations, references, and footnotes in posts, pages, or custom post types using a user-friendly editor interface.

JReferences vs Citation Note