Sonya Hartnett Books

Ghost s Child

By Sonya Hartnett

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Sadie and Ratz

By Sonya Hartnett, Ann James

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Surrender

By Sonya Hartnett

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Butterfly

By Sonya Hartnett

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"Exquisitely written . . . steeped in emotional clairvoyance." — Bulletin of the Center for Children’s Books (starred review)Plum Coyle is on the edge of adolescence. Her four...

Sadie and Ratz

By Sonya Hartnett Illustrated By Ann James

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“A real slice of family life, the sweet with the bitter.” — Kirkus Reviews (starred review)Sadie and Ratz are the names of Hannah’s hands. They aren’t animal...

The children of the king

By Sonya Hartnett

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"Cecily and Jeremy have been sent to live with their Uncle Peregrine in the English countryside, safe from the war, along with a young refugee named May. But when Cecily and May find two mysterious...

Thursday s Child

By Sonya Hartnett

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The Silver Donkey

By Sonya Hartnett

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Children of the King

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Stripes of the Sidestep Wolf

By Sonya Hartnett

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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.