John Sazaklis Books

Marvel

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Packed with fun facts, bizarre-but-true tales, and quirky insights into everyone's favorite Marvel comic characters, including The Avengers, Spider-Man, and Daredevil. little-known facts and inform...

World of Reading: Super Hero Adventures: Tricky Trouble!

By Alexandra West

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Thor enlists the help of his super friends when Loki keeps playing tricks on him.

Return of the Dinobot

By John Sazaklis

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Twelve-year-old Kevin Bowman is now working with the Autobots to fight the evil Decepticons and search for his missing brother. Kevin is starting to lose hope until he gets help from the most unexp...

The ghosts of Griffin Rock

By John Sazaklis

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Ghosts are appearing all over Griffin Rock! When concerned citizens notify Chief Burns, it's up to the Rescue Bots to investigate the hauntings. Are the spirits of the pioneers restless? Or is ther...

Land before Prime

By John Sazaklis

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After Blades and Dani spot a pterodactyl flying high above Griffin Rock, the team discovers dinosaurs all over Wayward Island. Can the Rescue Bots and their friends stop the dinos in their tracks?

Clayface Returns

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Ski Trip Terror

By John Sazaklis

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Beware the Bookworm

By John Sazaklis

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Hair Scare

By John Sazaklis, Patrycja Fabicka

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Space Spooks

By John Sazaklis, Patrycja Fabicka

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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.