APA Edition Citation

Hoel, P. G., Port, S. C., & Stone, C. J. (1971). Introduction to probability theory. Universal book stall.

Chicago Edition Citation

Hoel, Paul G., Sidney C. Port, and Charle J. Stone. Introduction to Probability Theory. New Delhi: Universal book stall, 1971.

MLA Edition Citation

Hoel, Paul G., et al. Introduction to Probability Theory. Universal book stall, 1971.