Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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