Douglas Sun Books

A Treasure on the Rocks

By Melissa McDonald, Douglas Sun

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The Dwarven Smith s Tome

By Kimberly Unger, Douglas Sun

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L5R RPG Masters of War L5r

By Alderac Entertainment Group

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Path to the Paladin Queen s Forest

By Melissa Mac, Douglas Sun

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Worlds Largest City

By Sean Holland, Jack Kessler, Aaron Rosenberg, Rob Wieland, Richard Farrese, Douglas Sun, Rob Vaux, Valérie Kessler, Patrick Kapera, Shawn Carman

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ENTER A CITY OF DIVERSITY, A CITY OF DEPTH, A CITY OF INTRIGUE... A CITY OF DANGER!Leaving the dungeon to take a well-earned rest in the city has never felt like this before . . . You thought you h...

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.