APA (7e ed.) Bronvermelding

Pólya, G. (1968). Mathematics and plausible reasoning (2nd ed.). Princeton University Press.

Chicago (17e ed.) Bronvermelding

Pólya, George. Mathematics and Plausible Reasoning. 2nd ed. Princeton, N.J: Princeton University Press, 1968.

MLA (9e ed.) Bronvermelding

Pólya, George. Mathematics and Plausible Reasoning. 2nd ed. Princeton University Press, 1968.