John Worthen Books

The Rainbow Twentieth Century Classics

By David Herbert Lawrence, John Worthen

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Women in Love

By David Herbert Lawrence

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D. H. Lawrence: The Life of an Outsider

By John Worthen

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D. H. Lawrence's Sons and Lovers: A Casebook

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D. H. Lawrence's Sons and Lovers: A Casebook

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"Over a dramatic six-month period in 1802, William Wordsworth, S. T. Coleridge, Wordsworth's sister Dorothy, and the two Hutchinson sisters Sara and Mary formed a close-knit group whose members saw...

Robert Schumann: Life and Death of a Musician

By John Worthen

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Robert Schumann: Life and Death of a Musician

By John Worthen

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D.H. Lawrence

By John Worthen

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D. H. Lawrence and the idea of the novel

By John Worthen

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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.