Stella Duffy Books

"A bravura performance: a witty, moving, sexy book that bursts with as much color and excitement as the city of Constantinople itself." -Financial TimesRoman historian Procopius publicly praised...

Theodora: Actress, Empress, Whore, Stella Duffy's chronicle of this amazing woman's early years, delighted readers with its exquisite blend of historical detail and vivid storytelling. Now, The Pur...

Singling Out the Couples

By S. Duffy

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Eating Cake

By Stella Duffy

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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.