Cita APA (7a ed.)

Jeffreys, S. H. (1961). Theory pf probability (3d ed.). Clarendon Press.

Cita Chicago Style (17a ed.)

Jeffreys, Sir Harold. Theory Pf Probability. 3d ed. Oxford: Clarendon Press, 1961.

Cita MLA (9a ed.)

Jeffreys, Sir Harold. Theory Pf Probability. 3d ed. Clarendon Press, 1961.