APA
weeks J. R., . (2002). population an introduction to concepts and issues. : wadsworth.
Chicago
weeks JOHN R, . 2002. population an introduction to concepts and issues. : wadsworth.
Harvard
weeks J. R., . (2002). population an introduction to concepts and issues. : wadsworth.
MLA
weeks JOHN R, . population an introduction to concepts and issues. : wadsworth. 2002.