Mark Greaney Books

The Chaos Agent

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Artificial intelligence leads to shockingly real danger for the Gray Man in this latest entry in the #1 New York Times bestselling series.A car accident in Japan.A drowning in Seoul.A home invasion...

One minute out

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Armored

By Mark Greaney

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A novel inspired by #1 New York Times best-selling author Mark Greaney’s Audible Original drama, Armored.Joshua Duffy is a Close Protection Agent—a professional bodyguard—and he's...

Burner

By Mark Greaney

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Court Gentry is caught between the Russian mafia and the CIA in this latest electrifying thriller in the #1 New York Times bestselling Gray Man series.When you kick over a rock, you never know what...

Leading People

By Mark Greaney

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Tom Clancy Commander in Chief

By Mark Greaney

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Locked On

By Mark Greaney, Tom Clancy

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Threat Vector

By Mark Greaney, Tom Clancy

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Threat Vector

By Mark Greaney

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Threat vector

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Geheim agent Jack Ryan komt in actie als China met een cyberaanval probeert het Amerikaanse defensienetwerk plat te leggen om Taiwan, de Filipijnen en Maleisië te koloniseren.

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.