Paperback
(National Geographic School Pub, Sept. 2, 2003)
Provides a simple history of money as it replaced bartering, explains how some types of money are made, and shows how things such as checks and credit cards serve as invisible money
Hardcover
(Dorling Kindersley Publishers Ltd, March 1, 1990)
(A unique guide to money, both past and present, this book gives comprehensive coverage to this, the most fundamental of man's inventions, an invention on which the entire commercial aspect of our existence is based)