Justin Roberts Books

Giant Sized Butterflies on My First Day of School

By Justin Roberts

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Smallest Girl in the Smallest Grade

By Justin Roberts

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Fragile Empire

By Justin Roberts

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Plant Proteomics

By Justin Roberts

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From 4-time Grammy nominee Justin Roberts comes a heartfelt picture book about the lengths a father will go to in order to comfort and protect his child.Because you and I,we’re two of a pair: you’r...

Giant-Sized Butterflies On My First Day of School

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Find out how butterflies in your tummy are a good thing in this fresh take on being nervous for the first day of school.When a little girl wakes up on the first day of school, the butterflies in he...

The Smallest Girl in the Smallest Grade

By Justin Roberts Illustrated By Christian Robinson

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Hardly anyone noticed young Sally McCabe.She was the smallest girl in the smallest grade. But Sally notices everything—from the twenty-seven keys on the janitor’s ring to the bully...

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.