APA (7th ed.) Citation

Weeks, J. R. (2012). An introduction to population (11th ed.). Wadsworth Cengage Learning.

Chicago Style (17th ed.) Citation

Weeks, John Robert. An Introduction to Population. 11th ed. Belmont, Calif: Wadsworth Cengage Learning, 2012.

MLA (9th ed.) Citation

Weeks, John Robert. An Introduction to Population. 11th ed. Wadsworth Cengage Learning, 2012.