APA (7th ed.) Citation

Petersen, W. (1969). Population (2. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Petersen, William. Population. 2. ed. London: Macmillan, 1969.

MLA (9th ed.) Citation

Petersen, William. Population. 2. ed. Macmillan, 1969.