Melissa Lagonegro Books

Cinderella Diamond

By Melissa Lagonegro

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Disney Cars 2

By Melissa Lagonegro

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A tale of two sisters

By Melissa Lagonegro

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When a prophecy traps a kingdom in eternal winter, Princess Anna teams up with Kristoff and his reindeer to embark on a journey to find Anna's sister, the Snow Queen Elsa, to put an end to her icy...

Travel like a princess

By Melissa Lagonegro

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Ariel, Merida, Sleeping Beauty, and all the Disney princesses embark on royal journeys in this Step 2 reader. Girls ages 4 to 6 will love reading about the princesses' travels on vacations and trip...

5 Disney Pixar tales

By Melissa Lagonegro

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Collects five stories featuring characters from Disney Pixar films, including "Scaring Lessons," in which Mike and Sulley overcome their differences at Monsters University and become best friends.

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.