John Heffernan Books

Snakes on a Plane: The Complete Quote Book

By John Heffernan, None

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Stinky the tale of a smelly dog

By John Heffernan

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Stinky is a little dog who makes big smells. This new collection of fun, first chapter books for newly independent readers, has quirky stories and illustrations. In this book, join Stinky in his v...

CIS index to unpublished US Senate committee hearings

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Spud

By John Heffernan

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A learner's guide to Pintupi-Luritja

By John A. Heffernan

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Two Summers

By John Heffernan

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Rick is coming to visit again during the summer holidays, but things are very different on the farm this year. Will Rick recognise the place? Will he have as much fun as last time? Same friend. Sam...

Two Summers

By John Heffernan

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A horse called Elvis

By John Heffernan

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The island

By John Heffernan

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Haunted Australia

By John Heffernan

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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.