Papoulis, A., & Pillai, S. U. (2002). Probability, random variables, and stochastic processes (4th ed.). McGraw-Hill,.

Papoulis, Athanasios, and S. Unnikrishna Pillai. Probability, Random Variables, and Stochastic Processes. 4th ed. Boston : TaTa McGraw-Hill: McGraw-Hill,, 2002.

Papoulis, Athanasios, and S. Unnikrishna Pillai. Probability, Random Variables, and Stochastic Processes. 4th ed. McGraw-Hill,, 2002.