John Gunnell Books

Volkswagens are some of the most iconic and easily recognizable cars on the road, and The Complete Book of Classic Volkswagens is your definitive visual encyclopedia. The classic air-cooled Volkswa...

Standard Catalog of Nova and Chevy II

By John Gunnell

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Standard Catalog of Oldsmobile 1897-1997 CD

By John Gunnell

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Standard Catalog of Ford 1903-2002

By John Gunnell

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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.