Weeks, J. R. (1996). Population: An introduction to concepts and issues (6th ed.). Wadsworth.
Chicago Style (17. basım) AtıfWeeks, John R. Population: An Introduction to Concepts and Issues. 6th ed. Belmont, Ca: Wadsworth, 1996.
MLA (9th ed.) AtıfWeeks, John R. Population: An Introduction to Concepts and Issues. 6th ed. Wadsworth, 1996.
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