ISBN numbers and barcodes' are provided for all our publications.

(a) ISBN [International Standard Book Number]
(10) Digit’s
(13) Digit’s

(b) A Library of Congress Catalog Number is assigned to your book while in publication. With those numbers, every library will be happy to secure your book because the numbers they need from the Library of Congress to catalog your book will already be printed on your book.

(c) Barcode: Some of our books are sold in book stores, department stores and even supermarkets. They use scanners to scan the price of your book at the cash registrar. Without the barcode, they will not accept your book.