Derek Hartley Books

Teach Yourself Tap Dancing

By Derek Hartley

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Teach Yourself Tap Dancing Teach Yourself General

By Derek Hartley

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The Essential Guide to Tap Dance

By Derek Hartley

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Hurricane Bianca

By Derek Hartley, Matt Kugelman, Ash Christian

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After winning over the staff and students of Milford High School, chemistry teacher Richard Martinez aka Bianca Del Rio sent her nemesis Vice Principal Deborah 'Debbie' Ward to jail in a flawlessly...

Teach Yourself Tap Dancing

By Derek Hartley

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When Nightlife Falls

By Derek Hartley

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.