Sandor Stern Books

The Amityville horror

By Sandor Stern, Ronald Saland, Elliot P. Geisinger, Stuart Rosenberg

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The Long Island colonial house on the river's edge seemed perfect, but their new house soon becomes a hellish nightmare.

The Life and Adventures of Ralph, the Cat

By Sandor Stern

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Any cat born with three legs faces a difficult future, but when born on a farm and expected to hunt rats, three legs is a disaster. That is the predicament facing our protagonist, Ralph. But Ralph...

The Amityville Horror

By Jay Anson, Sandor Stern, Samuel Z. Arkoff, Ronald Saland, Elliot Geisinger, George Lutz, Kathy Lutz

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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.