John Hennessy Books

Reunion of the Blood

By John Hennessy

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Children of the Dark Light

By John Hennessy

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Designing Employee Health Management Programs

By Michael Carter, John Hennessy, WorldatWork

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Designing Employee Health Management Programs

By Michael Carter, John Hennessy, WorldatWork

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Set Change

By John Hennessy, Yuri Andrukhovych Translated From The Ukrainian By Ostap Kin

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The first comprehensive English-language collection of one of the most important voices in contemporary Ukrainian literature, a collection of poems about the region's history of violence as seen th...

Mastery of Martial Arts

By John Hennessy

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New Orthography

By Sergij Viktorovic Zadan, John Hennessy, Ostap Kin

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Architecture des ordinateurs

By John Hennessy, David Patterson

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Our Hearts Go to Their Graves

By John Hennessy

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One More Story a Thriller

By John Hennessy

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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.