APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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