William J. Knaus Books

Fearless Job Hunting

By William J. Knaus, Nancy Knaus, Russell Grieger, Sam Klarreich, George Elias

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Procrastination Workbook

By William J. Knaus

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Procrastination Workbook

By William J. Knaus

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The cognitive behavioral workbook for depression

By William J. Knaus

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"The Cognitive Behavioral Workbook for Depression offers a complete program for defeating depressive thinking and other symptoms of depression using cognitive behavioral therapy, a proven effective...

The cognitive behavioral workbook for depression

By William J. Knaus

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The cognitive behavioral workbook for depression

By William J. Knaus

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Do It Now

By William J. Knaus, John W. Edgerly

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Overcoming Procrastination for Teens

By William J. Knaus

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Overcoming Procrastination for Teens

By William J. Knaus

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Overcoming Procrastination for Teens

By William J. Knaus

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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.