APA Edition Citation

Hoel, P. G., Port, S. C., & Stone, C. J. (1991). Introduction to probability theory. Universal Book Stall.

Chicago Edition Citation

Hoel, Paul G., Sidney C. Port, and Charles J. Stone. Introduction to Probability Theory. New Delhi: Universal Book Stall, 1991.

MLA Edition Citation

Hoel, Paul G., et al. Introduction to Probability Theory. Universal Book Stall, 1991.