Cita APA (7th ed.)
Weeks, J. R. (2008). Population: An introduction to concepts and issues (10th ed.). Wadsworth.
Cita Chicago (17th ed.)
Weeks, John R. Population: An Introduction to Concepts and Issues. 10th ed. Australia: Wadsworth, 2008.
Cita MLA (9th ed.)
Weeks, John R. Population: An Introduction to Concepts and Issues. 10th ed. Wadsworth, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.