David Levithan Books

Ryan and Avery

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From the New York Times bestselling author of EVERY DAY, this is a queer love story for the ages--told over the course of a couple's first ten dates.When a blue-haired boy (Ryan) meets a pink-haire...

Sam & Ilsa's Last Hurrah

By David Levithan, Rachel Cohn

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The New York Times Bestselling duo behind Nick & Norah's Infinite Playlist and The Twelve Days of Dash & Lily return with twins out to throw the party of a lifetime--or at least the best party of h...

Journey Through the Lost Canyon

By David Levithan

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Sixth Sense

By David Levithan

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Penguin Readers Level 2

By David Levithan

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Wide Awake Now

By David Levithan

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From the New York Times bestselling author of Every Day, this is a queer love story set against the backdrop of the 2024 presidential election, in a reimagining of David Levithan’s 2004...

Wide Awake Now

By David Levithan

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From the New York Times bestselling author of Every Day, this is a queer love story set against the backdrop of the 2024 presidential election, in a reimagining of David Levithan’s 2004...

Ryan and Avery

By David Levithan

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The Twelve Days of Dash Lily

By David Levithan, Rachel Cohn, Tara Sands, Ryan Gesell

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Boy Meets Boy

By David Levithan

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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.