Cathy Hapka Books

Star bright

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When Star agrees to appear on a reality TV show, everything goes wrong and her image is threatened with becoming damaged.

Dreamer

By Cathy Hapka

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Cale and her father nurse an injured horse back to health and dream of winning a big horse race.

Sofia makes a friend

By Cathy Hapka

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Sofia makes a new friend at the palace.

"Sofia is excited when James asks her to be his teammate at the Tri-Kingdom Games! Sofia wants to have fun, but James only cares about winning. Can Sofia convince her brother that being a poor spor...

Sofia the First The Royal Slumber Party

By Disney Book Group, Disney Storybook Art Team, Catherine Hapka

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Meet the Buddies

By Cathy Hapka

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The Buddies are known for their adventure-filled days, and in this story readers will get to know the pups as each one gears up for a brand-new day. Budderball starts his out with a breakfast fit f...

All stuffed up

By Cathy Hapka

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"Donny's dusty teddy bear has him all stuffed up!"--Page 4 of cover.

The amulet and the anthem

By Cathy Hapka

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When Sofia boasts to her friends about singing the Enchancian anthem, a curse has her croaking like a frog!

Holiday in Enchancia

By Cathy Hapka

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A snowstorm prevents King Roland from returning home in time for the holidays. Sofia leads her family on a brave expedition to find him, and shows Amber that spending the holiday with loved ones is...

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.