APA (7th ed.) Citation

Beckmann, P. (1971). A history of [pi] (pi) (2d ed.). Golem Press.

Chicago Style (17th ed.) Citation

Beckmann, Petr. A History of [pi] (pi). 2d ed. Boulder, Colo.: Golem Press, 1971.

MLA (9th ed.) Citation

Beckmann, Petr. A History of [pi] (pi). 2d ed. Golem Press, 1971.