APA

Armitage P., . (1971). Statistical methods in medical research. New York: Wiley.

Chicago

Armitage P, . 1971. Statistical methods in medical research. New York: Wiley.

Harvard

Armitage P., . (1971). Statistical methods in medical research. New York: Wiley.

MLA

Armitage P, . Statistical methods in medical research. New York: Wiley. 1971.