Ronald G. Perrier Books

Growing up male in America

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Sixteen interviews with men between the ages of 21 and 31 from various walks of life, educational backgrounds, and work experiences. Their occupations include plumber, bartender, university cheerle...

A Sense of Honor

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Plays for Stage and Screen Volumes 1 2

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From Fiction to Film

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A Sense of Honor

By Ronald G. Perrier

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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.