Kevin Leman Books

Ten un nuevo esposo para el viernes

By Kevin Leman

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Have a new teenager by Friday

By Kevin Leman

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Popular psychologist and bestselling author Dr. Kevin Leman shows parents how to establish boundaries, gain respect, and turn problem behaviors around with their teenager in five days.

Have a new teenager by Friday

By Kevin Leman

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Popular psychologist and bestselling author Dr. Kevin Leman shows parents how to establish boundaries, gain respect, and turn problem behaviors around with their teenager in five days.

It happens to every parent. One day, you have a sweet son or daughter who loves to snuggle on the couch and who puts a smile on your face just by walking into the room. The next day, it's as if som...

Education a la carte

By Kevin Leman

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Have a New Kid by Friday

By Kevin Leman

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The Real You Become the Person You Were Meant to Be

By Kevin Leman

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Parent talk

By Dr. Kevin Leman, Kevin Leman

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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.