APA (7th ed.) Citation

Hoel, P. G. (1971). Introduction to mathematical statistics (4. ed.). Wiley.

Chicago Style (17th ed.) Citation

Hoel, Paul G. Introduction to Mathematical Statistics. 4. ed. New York, NY [u.a.]: Wiley, 1971.

MLA (9th ed.) Citation

Hoel, Paul G. Introduction to Mathematical Statistics. 4. ed. Wiley, 1971.