APA
Feller W., . (1950). Introduction to Probability theory and its Applications. NY: John Wiley & Sons.
Chicago
Feller Willium, . 1950. Introduction to Probability theory and its Applications. NY: John Wiley & Sons.
Harvard
Feller W., . (1950). Introduction to Probability theory and its Applications. NY: John Wiley & Sons.
MLA
Feller Willium, . Introduction to Probability theory and its Applications. NY: John Wiley & Sons. 1950.