Cramer, H. (1955). Elements of probability theory. John Wiley.
Cita Chicago (17th ed.)Cramer, Harald. Elements of Probability Theory. New York: John Wiley, 1955.
Cita MLA (9th ed.)Cramer, Harald. Elements of Probability Theory. John Wiley, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.