Mark Sofilas Books

There's a Bat on the Balcony (Voyages (Santa Rosa, Calif.).)

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Her brother Chris won't believe her when Jenny finds a bat on the balcony, a tree frog in the toilet, and other small animals all over the house.

Jake was a pirate

By Pauline Cartwright

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Jake is a pirate who would really rather be a gardener.

The burnt stick

By Hill Anthony

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Growing up in a missionary home run by white men, John Jagamarra, who is part aborigine and part white, misses the mother from whom he's been separated and the culture of his own people.

Hello I Am Fiona from Scotland

By Mark Graham

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Burnt Stick

By Hill Anthony, Mark Sofilas

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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.