APA Citatie

Ifrah, G., & Bellos, D. [. e. a. (1981). Universal history of numbers: From prehistory to the invention of the computer. The Harvill Press.

Chicago Style citaat

Ifrah, Georges, en David [... et al] Bellos. Universal History of Numbers: From Prehistory to the Invention of the Computer. London: The Harvill Press, 1981.

MLA citatie

Ifrah, Georges, en David [... et al] Bellos. Universal History of Numbers: From Prehistory to the Invention of the Computer. The Harvill Press, 1981.