John Shiffman Books

Operation Shakespeare

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"A Pulitzer Prize finalist presents the rare and intimate narrative of a daring national security sting designed to protect US soldiers, sailors, and pilots from the greatest danger they face on th...

Operation Shakespeare

By John Shiffman

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Operation Shakespeare

By John Shiffman

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Operation Shakespeare

By David Drummond, John Shiffman

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Infiltrado

By Robert K. Wittman, John Shiffman

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Hold the Line

By Michael Fanone, John Shiffman

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Hold the Line

By Michael Fanone, John Shiffman

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Hold the Line

By Michael Fanone, John Shiffman

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Unbezahlbar

By John Shiffman

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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.