Cita APA (7a ed.)

Jeffreys, H. (1961). Theory of probability (3rd ed.). Clarendon.

Cita Chicago Style (17a ed.)

Jeffreys, Harold. Theory of Probability. 3rd ed. Oxford: Clarendon, 1961.

Cita MLA (9a ed.)

Jeffreys, Harold. Theory of Probability. 3rd ed. Clarendon, 1961.