Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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