Citazione Stile APA (7a Edizione)

Weeks, J. R. (2016). Population: An introduction to concepts and issues (Twelfth edition.). Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Twelfth edition. Boston, MA, USA: Cengage Learning, 2016.

Citatione MLA (9a ed.)

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Twelfth edition. Cengage Learning, 2016.