APA Edition Citation

Freund, J. E., & Walpole, R. E. (1990). Mathematical statistics (23.).

Chicago Edition Citation

Freund, John E., and Ronald E. Walpole. Mathematical Statistics. 23. Prentice-Hall of India Pvt. Ltd., New Delhi, 1990.

MLA Edition Citation

Freund, John E., and Ronald E. Walpole. Mathematical Statistics. 23. 1990.