Dyfyniad APA

Weeks, J. R. (1999). Population: An introduction to concepts and issues (Seventh edition.). Wadsworth Publishing, Company.

Dyfyniad Arddull Chicago

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Seventh edition. Belmont, California: Wadsworth Publishing, Company, 1999.

Dyfyniad MLA

Weeks, John Robert. Population: An Introduction to Concepts and Issues. Seventh edition. Wadsworth Publishing, Company, 1999.

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