Michelle Knudsen Books

Argus

By Michelle Knudsen Illustrated By Andrea Wesson

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From the author of the best-selling Library Lion comes a funny, heartfelt picture book about embracing the unusual, green scales and all.Sally’s class is doing a science project, and Mrs. Hen...

Big Mean Mike

By Michelle Knudsen

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Mike is proud to be the biggest, toughest dog in the neighborhood, so when tiny, fuzzy bunnies start showing up in his big, mean car he sees them only as a threat to his reputation, no matter how a...

The Princess of Trelian

By Michelle Knudsen

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Michelle Knudsen revisits Trelian in a thrilling follow-up fantasy about a princess with an uncanny link to a dragon and a uniquely talented young mage.The hundred-year war with Kragnir is over, an...

Mage of Trelian

By Michelle Knudsen

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Dragon of Trelian

By Michelle Knudsen

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Evil Librarian

By Michelle Knudsen

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Marilyn s Monster

By Michelle Knudsen, Matt Phelan

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Big Mean Mike

By Scott Magoon, Michelle Knudsen

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Revenge of the Evil Librarian

By Michei I E Knudsen

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A Moldy Mystery Social Studies Connects

By Michelle Knudsen

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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.