APA (7th ed.) Citation

Gregory, R. E. (1974). A history of numbers, time and money (1. publ.). Whitcombe & Tombs.

Chicago Style (17th ed.) Citation

Gregory, Richard E. A History of Numbers, Time and Money. 1. publ. [Sydney]: Whitcombe & Tombs, 1974.

MLA (9th ed.) Citation

Gregory, Richard E. A History of Numbers, Time and Money. 1. publ. Whitcombe & Tombs, 1974.