APA (7th ed.) Citation

Weeks, J. R. (1996). Population: An introduction to concepts and issues (6th ed.). Wadsworth.

Chicago Style (17th ed.) Citation

Weeks, John Robert. Population: An Introduction to Concepts and Issues. 6th ed. Belmont, California: Wadsworth, 1996.

MLA (9th ed.) Citation

Weeks, John Robert. Population: An Introduction to Concepts and Issues. 6th ed. Wadsworth, 1996.