Dyfyniad APA

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

Dyfyniad Arddull Chicago

Hoel, Paul Gerhard, Sidney C. Port, and Charles Joel Stone. Introduction to Probability Theory. New Delhi: Univrsal, 1991.

Dyfyniad MLA

Hoel, Paul Gerhard, et al. Introduction to Probability Theory. Univrsal, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.