Hardcover 1979 Year Gregg Press Publisher ISBN-13: 978-0-8398-2527-2 ISBN-10: 0-8398-2527-7 Buy on Amazon
Paperback 2011 Year Baen Books Publisher ISBN-13: 978-1-4516-3767-0 ISBN-10: 1-4516-3767-5 Buy on Amazon
Digital Books 2011 Year Gateway / Orion Publisher ISBN-13: 978-0-575-10885-1 ISBN-10: 0-575-10885-1 Not Available for Purchase
Audio 2021 Year Tantor and Blackstone Publishing Publisher ISBN-13: 979-8-200-28210-4 ISBN-10: Not Available for Purchase
Traditional Print 1964 Year Atlas Publishing and Distribution Co. Ltd Publisher Not Available for Purchase