Mark Johnston Books

With help from his friends, New York City high school student Kyle Parker sets out to save his parents' marriage by trying to get his father's novel published.

Saving God

By Mark Johnston

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Peru

By Tyana Wachter, Ernesto Ruelas Inzunza, Patricia Alvarez Loayza, Alvaro Del Campo, Gloria Sarmiento Valenzuela, Sebastian Heilpern, Douglas F. Stotz, Jonathan A. Markel, Agustin Lancha Pizango, Corine Vriesendorp, Nigel Pitman, Mark Johnston, Joshua Homan, Diana Alvira

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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.