Brad S. Gregory Books

Rebel in the Ranks: Martin Luther, the Reformation, and the Conflicts That Continue to Shape Our World

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On the 500th anniversary of the Reformation comes this compelling, illuminating, and expansive religious history that examines the complicated and unintended legacies of Martin Luther and the epoch...

Rebel in the Ranks

By Brad S. Gregory

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Salvation at Stake

By Brad S. Gregory

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Salvation at Stake

By Brad S. Gregory

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"Brad Gregory explores Protestant, Catholic, and Anabaptist martyrs in a sustained fashion, addressing the similarities and differences in their self-understanding. He traces the processes and impa...

Rebel in the Ranks

By Brad S. Gregory

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The Teaching Company

By Brad S. Gregory

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Gli imprevisti della Riforma

By Brad S. Gregory

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Rebel in the Ranks

By Brad S. Gregory

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Seeing Things Their Way

By John Coffey, Alister Chapman, Brad S. Gregory

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Journeys of faith

By Robert L. Plummer

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"Research indicates that on average, Americans change their religious affiliation at least once during their lives. Today, a number of evangelical Christians are converting to Catholicism, Eastern...

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.