George G. Sheldon Books

What, where, and how to buy!  The Complete Idiot’s Guide® to Real Estate Investing Basics presents the practical advice and knowledge readers need to get started in the residen...

The Pocket Idiot's Guide to Potty Training Problems

By George Sheldon, Alison D. Schonwald MD.

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Making potty time happy for toddlers and parents.  It’s one of the first rites of passage in life. Somewhere around the age of 26 months—more or less—toddlers are introduced...

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.