Scott Bolinger

GTINs (Global Trade Item Numbers) including UPC, EAN, and ISBN are globally recognized unique identifiers for products.
They are required to list your product on Google and Amazon, this plugin allows you to add your GTIN and display it on your product page.
Supports:
<ul>
<li>Simple products</li>
<li>Variable products</li>
<li>Composite products</li>
<li>Product bundles</li>
</ul>
Features:
<ul>
<li>Add GTIN for main product</li>
<li>Add unique GTINs for product variations</li>
<li>Option to display GTIN on the single product page</li>
<li>Change GTIN to any other text</li>
<li>Add GTIN to structured product data</li>
<li>Works with product feeds like Google Shopping and more (requires a feed plugin)</li>
</ul>

WooCommerce UPC, EAN, and ISBN

Awesome plugin with great code

Add GTIN codes like UPC, EAN, and ISBN to your WooCommerce products.

Haseeb Ahmad Ayazi

ISBN is the acronym for International Standard Book Number. This 10 or 13-digit number identifies a specific book, an edition of a book, or a book-like product (such as an audiobook). Since 1970 each published book has a unique ISBN. In 2007, assigned ISBNs changed from 10 digits to 13. 
You can use this plugin to add an ISBN Book Search widget in your sidebar. Your users now don’t have to leave your website to go and search for any ISBN. 
This plugin works with both ISBN-10 and ISBN-13. Plugin uses Amazon to load the books and display to your users.
Project Page <a href="http://techooid.com/dev/wp-plugins/isbn-book-search" title="ISBN Book Search Plugin" rel="nofollow ugc">ISBN Book Search</a>
Visit <a href="http://techooid.com/dev/wp-plugins/" title="Science WordPress Plugins" rel="nofollow ugc">Techooid.com – WordPress Plugins</a> for more Plugins. 
Visit <a href="http://techooid.com/dev" title="Educational Tools and Plugins" rel="nofollow ugc">Techooid.com – DEV Center</a> for more Academic Projects. 
Visit <a href="https://isbn-nummer.de" rel="nofollow ugc">ISBN Suche</a> for German ISBN Search and Books

ISBN Book Search

Add ISBN Book seach widget in the Sidebar of your any website.

WooCommerce UPC, EAN, and ISBN vs ISBN Book Search