Joyce J. Penner Books

The Way to Love Your Wife

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"Longing for a deeper sexual connection with your husband? You may feel obliged to please your husband in bed, but neglect your own pleasure. Noted sex therapists Joyce and Clifford Penner warn tha...

The Married Guy s Guide to Great Sex

By Clifford L. Penner, Joyce J. Penner

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Restoring the Pleasure

By Joyce J. Penner, Clifford Penner

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Sex 101

By Clifford L. Penner, Joyce J. Penner

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Sex 101

By Clifford L. Penner, Joyce J. Penner

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52 Ways to Have Fun Fantastic Sex

By Joyce J. Penner, Clifford Penner

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Gift of Sex

By Joyce J. Penner, Clifford Penner

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Getting Your Sex Life off to a Great Start

By Joyce J. Penner, Clifford Penner

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Sex 101

By Joyce J. Penner, Clifford Penner

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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.