John Jantsch Books

The Referral Engine

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The small business guru behind Duct Tape Marketing shares his most valuable lesson: how to get your customers to do your best marketing for you. The power of glitzy advertising and elaborate mar...

Digital Marketing Growth Hacks

By Ian Cleary, Erik Qualman, Viveka Von Rosen, Andrea Vahl, John Jantsch

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Ventas y Marketing. un Solo Corazon

By John Jantsch

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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.