Ray Riegert Books

The Lost Gospel Q

By Mark Powelson, Ray Riegert, Marcus J. Borg

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The Lost Gospel Q - written by Jesus' contemporaries and preserving his original words - brings you closer to the historical figure of Jesus than ever before. A sacred handbook for his earliest fol...

Hidden Coast of California

By Ray Riegert

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Hidden Maui 2nd Edition

By Ray Riegert

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Hidden San Francisco and Northern California Hidden San Francisco and Northern California 8th ed

By Ray Riegert

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Hidden Southern California Hidden Southern California 6th ed

By Ray Riegert

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Hidden Coast of California

By Ray Riegert

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Hidden Oahu Hidden Oahu 2nd ed

By Ray Riegert

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Hidden Southern California Hidden Southern California 7th ed

By Ray Riegert

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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.