Wendelin Van Draanen Books

"Sammy Keyes has spent the last few years solving other people's mysteries; now her friends (and some foes) come together to unmask the fiend who has put Sammy in a coma"-- Sammy Keyes has spent t...

Sammy Keyes and the Hotel Thief Sammy Keyes

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Sammy Keyes and the Runaway Elf

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Sammy Keyes and the Sisters of Mercy

By Wendelin Van Draanen

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Sammy continues to make life with her grandmother interesting as she tries to discover who is stealing from St. Mary's church, befriends a homeless girl, and plays in a softball tournament against...

Sammy Keyes and The Skeleton Man

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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.