APA

Hill A. B., . (1956). Principles of medical statistics. New York: Oxford University Press.

Chicago

Hill Austin Bradford, . 1956. Principles of medical statistics. New York: Oxford University Press.

Harvard

Hill A. B., . (1956). Principles of medical statistics. New York: Oxford University Press.

MLA

Hill Austin Bradford, . Principles of medical statistics. New York: Oxford University Press. 1956.