APA (7th ed.) Citation

Helms, L. L. (1997). Introduction to probability theory : with contemporary applications / Lester L. Helms: With contemporary applications. W.H. Freeman.

Chicago Style (17th ed.) Citation

Helms, Lester LaVerne. Introduction to Probability Theory : With Contemporary Applications / Lester L. Helms: With Contemporary Applications. New York: W.H. Freeman, 1997.

MLA (9th ed.) Citation

Helms, Lester LaVerne. Introduction to Probability Theory : With Contemporary Applications / Lester L. Helms: With Contemporary Applications. W.H. Freeman, 1997.

Warning: These citations may not always be 100% accurate.