APA Style

Papoulis, A., PILLAI, S, U. (2002). Probability, Random Variables, and Stochastic Processes 4th ed (1). Boston: McGraw-Hill.

MLA Style

Papoulis, Athanasios., PILLAI, S., UNNIKRISHNA. "Probability, Random Variables, and Stochastic Processes 4th ed". 1 Boston: McGraw-Hill, 2002. Text.