APA (7th ed.) Citation

Feller, W. (1957). An introduction to probability theory and its applications (2d ed.). Wiley.

Chicago Style (17th ed.) Citation

Feller, William. An Introduction to Probability Theory and Its Applications. 2d ed. New York: Wiley, 1957.

MLA (9th ed.) Citation

Feller, William. An Introduction to Probability Theory and Its Applications. 2d ed. Wiley, 1957.