Mariana Costa Books

Shoestring Theory

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A queer, madcap, friends-to-lovers-to-enemies-to-lovers time travel romance with the future of the world at stake, this charming fantasy tale is sure to satisfy fans of Legends...

Moon Warrior

By Jory Neff, Saryssa VanBibber, Mariko Irving, Kathylyn Sedgwick, Mariana Costa

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Moon Warrior

By Jory Neff, Saryssa VanBibber, Mariko Irving, Kathylyn Sedgwick, Mariana Costa

Average: 0.00, 0 Ratings

Shoestring Theory

By Mariana Costa

Average: 0.00, 0 Ratings

A queer, madcap, friends-to-lovers-to-enemies-to-lovers time travel romance with the future of the world at stake, this charming fantasy tale is sure to satisfy fans of Legends...

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.