Ralph Pezzullo Books

Most Evil

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From the New York Times bestselling author of Black Dahlia Avenger Former LAPD detective Steve Hodel compiles never-before-seen evidence that reveals his father as a serial killer who may have be...

Ghost

By Michael R. McGowan, Ralph Pezzullo

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Full Battle Rattle

By Changiz Lahidji, Ralph Pezzullo

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Plunging into Haiti

By Ralph Pezzullo

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Walk In

By Gary Berntsen, Ralph Pezzullo

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SEAL Team Six

By Ralph Pezzullo, Don Mann

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When a Senator's wife and teenage daughter are kidnapped SEAL Team Six are sent after them - to the cities of Mexico and the jungles of South and Central America, hot on the trail of Mexican drug l...

Hunt the Wolf

By Ralph Pezzullo, Don Mann

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SEAL Team Six Book 1

By Ralph Pezzullo, Don Mann

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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.