John Tenuto Books

An in-depth look at the making of Star Trek II: The Wrath of Khan, featuring rare and previously unseen production art and new and exclusive interviews.Forty years ago, Star Trek II: The Wrath of K...

Wind to Shake the Stars

By John Tenuto, Mary Jo Tenuto

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Star Trek II: The Wrath of Khan - The Making of the Classic Film

By John Tenuto, Maria Jose Tenuto

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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.