Ron Koertge Books

Sadie s Story

By Ron Koertge, Deborah Marcero, Christine Heppermann

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Jess s Story

By Ron Koertge, Deborah Marcero, Christine Heppermann

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Maya s Story Backyard Witch

By Ron Koertge, Christine Heppermann

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The Arizona Kid Limelight Books

By Ron Koertge

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Coaltown Jesus

By Ron Koertge

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When Jesus shows up in Walker’s life, healing triumphs over heartbreak in Koertge’s finest and funniest novel yet.Walker shouldn’t have been so surprised to find Jesus standing in...

Ron Koertge's startling, often poignant poetic novel evokes a suburban high school both familiar and terrifying.The Branston High School Class of 2001 seems familiar enough on the surface: there&rs...

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.