Sandra Worth Books

Pale Rose of England

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From the award-winning author of The King's Daughter comes a story of love and defiance during the War of the Roses. It is 1497. The news of the survival of Richard Plantagenet, Duke of York, has...

The British pharmaceutical industry

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Rose of York The

By Robin Sachs, Sandra Worth

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El ocaso de los Lancaster

By Montserrat Batista Pegueroles, Sandra Worth

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El destino de la corona

By Montserrat Batista Pegueroles, Sandra Worth

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El ultimo Plantagenet

By Montserrat Batista Pegueroles, Sandra Worth

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Lady of the Roses

By Sandra Worth

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During her short time as a ward in Queen Marguerite's Lancastrian court, fifteen-year-old Isobel has had many suitors ask for her hand, but the spirited beauty is blind to all but Yorkist Sir John...

In this groundbreaking novel, award-winning author Sandra Worth vibrantly brings to life the people's Queen, "Elizabeth the Good." Seventeen-year-old Elizabeth of York trusts that her beloved fathe...

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.