David Ellis Books

Gmat: Graduate Management Admission Test Book & Disk

By David B. Ellis, Thomas H. Martinson

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Gmat: Graduate Management Admission Test

By David B. Ellis, Thomas H. Martinson

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Gmat Cat: Everything You Need to Score High on the Computer-Adaptive Test

By Martinson, David B. Ellis, Thomas H. Martinson

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Guilty Wives

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"No husbands allowed. Only minutes after Abbie Elliot and her three best friends step off of a private helicopter, they enter the most luxurious, sumptuous, sensually pampering hotel they have ever...

Mistress

By James Patterson

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"Ben isn't like most people. Unable to control his racing thoughts, he's a man consumed by his obsessions: movies, motorcycles, presidential trivia-and Diana Hotchkiss, a beautiful woman Ben knows...

The Murder House

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No. 7 Ocean Drive is a gorgeous, multimillion-dollar beachfront estate in the Hamptons, where money and privilege know no bounds. But its beautiful gothic exterior hides a horrific past: it was the...

Unsolved

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The Black Book

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Being a cop runs in Billy Harney's family. The son of Chicago's Chief of Detectives whose twin sister, Patty, also followed in their father's footsteps, there's nothing Billy won't give up for the...

The Red Book

By James Patterson, David Ellis

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The Red Book

By David Ellis

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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.