Michelle Knudsen Books

From the New York Times best-selling creators of Library Lion comes a warm (and delightfully fuzzy) storybook about learning to be—and be loved for—exactly who you are.On a street of ol...

Marilyn s Monster

By Michelle Knudsen, Matt Phelan

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El caso de Vivian la vampira

By Michelle Knudsen

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When Molly and her sister notice bats in their neighborhood for the first time, they become suspicious of the new girl in school nicknamed Vampire Vivian.

Carl the Complainer

By Maryann Cocca Leffler, Michelle Knudsen

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Carl the Complainer

By Michelle Knudsen Illustrated By Maryann Cocca Leffler

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The popular Social Studies Connects series links history, geography, civics and economics to kids’ daily lives. Featuring stories with diverse characters who face situations young readers can...

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.