APA (7th ed.) Citation
Feller, W. (1968). An introduction to probability theory and its applications (3a ed.). John Wiley and sons.
Chicago Style (17th ed.) Citation
Feller, William. An Introduction to Probability Theory and Its Applications. 3a ed. New York: John Wiley and sons, 1968.
MLA (9th ed.) Citation
Feller, William. An Introduction to Probability Theory and Its Applications. 3a ed. John Wiley and sons, 1968.
Warning: These citations may not always be 100% accurate.