Roger Steer Books

GOOD NEWS FOR THE WORLD 200 years of making the word heard

By Roger Steer

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Inside story

By Roger Steer

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This new biography reveals the man behind John Stott's public persona, and weaves his timeless insights into the fast-moving story of a remarkable and unique life. --

Letter to an Influential Atheist

By Roger Steer

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George Muller, delighted in God

By Roger Steer

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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.