Jerry Spinelli Books

Still moping months after being dumped by her Arizona boyfriend Leo, fifteen-year-old Stargirl, a home-schooled free spirit, writes "the world's longest letter" to Leo, describing her new life in P...

The warden s daughter

By Jerry Spinelli

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Living with her warden father in an apartment above a 1950s prison, Cammie O'Reilly struggles to come to terms with the loss of her mother, who died saving her from harm when she was a baby, and in...

The Warden's Daughter

By Jerry Spinelli

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From Newbery Medalist Jerry Spinelli comes the story of a girl searching for happiness inside the walls of a prison. And don't miss the author's highly anticipated new novel, Dead Wednesday! Cammie...

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.