APA (7th ed.) Citation

Gnedenko, B. V., & Roberts, J. (1961). An elementary introduction to the theory of probability. W.H. Freeman.

Chicago Style (17th ed.) Citation

Gnedenko, B. V., and J.B Roberts. An Elementary Introduction to the Theory of Probability. San Francisco: W.H. Freeman, 1961.

MLA (9th ed.) Citation

Gnedenko, B. V., and J.B Roberts. An Elementary Introduction to the Theory of Probability. W.H. Freeman, 1961.