nusagates

CitePress lets you generate a properly formatted bibliography (reference) for any post using simple shortcodes.
Built for academic blogs, research documentation, online journals, and educational websites.
Features:
<ul>
<li>Citation styles supported: APA, MLA, Chicago, IEEE, Harvard, Vancouver, ASA, ACS, ACM</li>
<li>Customizable citation label and access date format</li>
<li>Outputs a styled, collapsible citation box</li>
<li>Uses clean shortcodes: <code>[citepress style="apa"]</code></li>
<li>No custom tables, no frontend scripts, lightweight</li>
</ul>

CitePress – Automatic Citation Generator

Generate and display a clean citation box for any WordPress post using customizable academic citation styles.

Dan Griffiths

Widgit

Simple Attribution is just that… simple! It adds a meta box on post pages 
which allows bloggers to specify the name and URL of the site a sourced article 
originated from. Assuming both these fields are filled out, it appends the 
attribution link to the bottom of the post.
Simple Attribution allows links to be generated in both text and image form, 
allowing you to customize it to the feel of your website. Natively, it includes 
5 icons which can be used to identify the attribution link instead of the 
standard caption (which is editable through the options panel), and custom 
icons can be used as well.
Don’t like where we put the link? You have the option to disable 
auto-attribution and put the link wherever you want it to display simply by 
adding <?php echo display_attribution(); ?> to your template!

Simple Attribution

I used it on newly installed wordpress 5.8 with default theme.
The problem is that, it didn't save the attribution title and url and also didn't show the links at bottom of the post.

I wish it work on new version. If it has git page, I can resolve it.

Thanks.

Didn't work on standard wordpress 5.8

A simple plugin to allow bloggers to add attribution to sourced posts.

CitePress – Automatic Citation Generator vs Simple Attribution