Nicole Andelfinger Books

Jessica and Elizabeth are ready to take on middle school . . . but are they ready to take on each other? The New York Times bestselling world of Sweet Valley Twins returns in these all-new graphic...

Sweet Valley Twins: Best Friends

By Claudia Aguirre, Francine Pascal

Average: 0.00, 0 Ratings

Jessica and Elizabeth are ready to take on middle school . . . but are they ready to take on each other? The New York Times bestselling world of Sweet Valley Twins returns in these all-new graphic...

Sweet Valley Twins: Best Friends

By Claudia Aguirre, Francine Pascal

Average: 0.00, 0 Ratings

Jessica and Elizabeth are ready to take on middle school . . . but are they ready to take on each other? The New York Times bestselling world of Sweet Valley Twins returns in these all-new graphic...

Sweet Valley Twins: Teacher's Pet

By Claudia Aguirre, Nicole Andelfinger, Francine Pascal

Average: 0.00, 0 Ratings

The Wakefield twins return in this graphic novel adaptation of the New York Times best-selling Sweet Valley Twins series! It's Elizabeth's turn in the spotlight... but does Jessica deserve it...

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.