Donna Jo Napoli Books

North

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Tired of his mother's overprotectiveness and intrigued by the life of African American explorer Matthew Henson, twelve-year-old Alvin travels north and spends a season with a trapper near the Arcti...

North

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North

By Donna Jo Napoli

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Soccer shock

By Donna Jo Napoli

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When ten-year-old Adam discovers that his freckles can see and talk, he plans to use this secret to get onto the school soccer team.

Shark Shock

By Donna Jo Napoli

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Jimmy: The Pickpocket of the Palace

By Donna Jo Napoli

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Jimmy, the froglet son of an enchanted frog-prince, tries to save his pond from the evil hag and in the process finds himself transformed into a human boy.

Zel

By Donna Jo Napoli

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High in the mountains, Zel lives with her mother, who insists they have all they need -- for they have each other. Zel's life is peaceful and protected -- until a chance encounter changes everythin...

On Guard

By Donna Jo Napoli

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Stones in Water

By Donna Jo Napoli

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When Roberto sneaks off to see a movie in his Italian village, he has no idea that life as he knows it is over. German soldiers raid the theater, round up the boys in the audience, and pack them on...

Spinners

By Richard Tchen, Donna Jo Napoli

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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.