Cita APA (7th ed.)

Polya, G. (1968). Patterns of plausible inference. Princeton University Press.

Cita Chicago (17th ed.)

Polya, George. Patterns of Plausible Inference. Princeton, NJ: Princeton University Press, 1968.

Cita MLA (9th ed.)

Polya, George. Patterns of Plausible Inference. Princeton University Press, 1968.