APA استشهاد

Hoel, P. G. (1947). Introduction to mathematical statistics/4th ed. John Wiley & Sons.

استشهاد بنمط شيكاغو

Hoel, Paul G. Introduction to Mathematical Statistics/4th Ed. New York: John Wiley & Sons, 1947.

MLA استشهاد

Hoel, Paul G. Introduction to Mathematical Statistics/4th Ed. John Wiley & Sons, 1947.