Cathy Torrisi Books

Beautiful buttons

By Cathy Torrisi

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Where does the garbage go?

By Cathy Torrisi

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The Dinosaur Detective Read To Me

By Cathy Torrisi, Frank W. Abagnale

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Who will help Ms. A?

By Cathy Torrisi

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When Ms. A decides to make applesauce, she has trouble getting people to help her until they smell the delicious aroma of the cooking apples.

Not now, Mr. N!

By Cathy Torrisi

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Mr. N must wait until recess to honk his noisy nose.

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.