John H. Cunningham Books

Green to Go Buck Reilly Adventure Series

By John H. Cunningham

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Second Chance Gold

By John H. Cunningham

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The Last Raft

By John H Cunningham

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Indigo Abyss

By John H. Cunningham

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Red right return

By John H. Cunningham

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"Buck Reilly's a lot like the rest of us--trying to make ends meet and hoping for better times. He's living in a Key West hotel and operates Last Resort Charter and Salvage aboard a 1946 Grumman Wi...

Crystal Blue

By John H. Cunningham

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Red Right Return

By John H. Cunningham

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Maroon Rising

By John H. Cunningham

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Free Fall to Black

By John H. Cunningham

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Last Raft

By John H. Cunningham

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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.