Jennifer Roy Books

Yellow Star

By Tavia Gilbert, Jennifer Roy

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Hayes Narrative Writing Grades 4 8

By Jennifer Roy

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Playing Atari with Saddam Hussein

By Jennifer Roy

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Yellow star

By Jennifer Rozines Roy

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From 1939, when Syvia is four and a half years old, to 1945 when she has just turned ten, a Jewish girl and her family struggle to survive in Poland's Lodz ghetto during the Nazi occupation.

Playing Atari with Saddam Hussein

By Ali Fadhil, Jennifer Roy

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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.