Chetan Kunte

This plugin extracts <code>cite=""</code> and <code>title=""</code> details from blockquote to display with attribution and link below the quote. <code>cite</code> field is for the web address of source quoted from. <code>title</code> for the name of the author or source.
An example of a typical block quotation (html mark-up) in use would like the following:
<pre><code><blockquote cite="http://www.quotedb.com/quotes/2369" title="Mahatma Gandhi">
 Live as if you were to die tomorrow. Learn as if you were to live forever.
</blockquote>
</code></pre>
When viewed on the web, it would look like:
Live as if you were to die tomorrow. Learn as if you 
 were to live forever.
— <a href="http://www.quotedb.com/quotes/2369" rel="nofollow ugc">Mahatma Gandhi</a>
This plugin is based on a javascript code by Dunstan Orchard. You might want to see <a href="http://demo.1976design.com/blockquotes/" rel="nofollow ugc">Dunstan’s Demo page</a> on how it works.

Extract blockquote info

This plugin extracts cite=&quot;&quot; and title=&quot;&quot; details from blockquote to display with attribution and link below the q …

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.

Extract blockquote info vs Simple Attribution