John Liptak Books

The Life Skills IQ Test

By John Liptak, John J. Liptak

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Treatment Planning in Career Counseling

By John Liptak

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Career Quizzes

By John Liptak, John J. Liptak

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The Life Skills IQ Test

By John Liptak

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Learn expert tips to maximize your essential life skills with ten self-quizzes to measure your practical intelligence.   Do you have trouble communicating to coworkers, friends and loved ones?...

College major quizzes

By John J. Liptak

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Testeaza ti abilitatile de viata

By John Liptak

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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.