Heather Martinez Books

Albert

By Heather Martinez, Will Eisenberg, Aaron Eisenberg

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Dino Parade! (Blaze and the Monster Machines)

By Heather Martinez, Mary Tillworth

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Zeg leads a dinosaur parade through Axle City. But when some of the dinosaurs get lost, it’s up to Blaze and his truck friends to save the day! Boys and girls ages 2 to 5 will love this Little Gold...

The SpongeBob Movie: Sponge on the Run: Welcome to Camp Coral! (SpongeBob SquarePants)

By Heather Martinez, David Lewman

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Nickelodeon's SpongeBob SquarePants returns in an all-new feature film--streaming soon!THE SPONGEBOB MOVIE: SPONGE ON THE RUN is coming soon to streaming services and CBS All Access. Part origin st...

The Golden Gecko

By Heather Martinez, Melissa Lagonegro

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The Big Halloween Scare

By Heather Martinez, Steven Banks

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How to draw SpongeBob SquarePants, Nickelodeon

By Heather Martinez

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How to Draw SpongeBob SquarePants Drawing Book and Kit

By Walter Foster Firm, Heather Martinez

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Nickelodeon s SpongeBob SquarePants Drawing Book Kit

By Walter Foster Firm, Heather Martinez

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Best of Nickelodeon Walter Foster How to Draw Series

By Walter Foster Firm, Heather Martinez, Steve Crespo

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The Best of Nickelodeon

By Gregg Schigiel Illustrator, Heather Martinez, Steve Crespo

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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.