APA (7th ed.) Zitazioa
Morris, D. M. (1979). Measuring the condition of the world's poor: The physical quality of life index. Pergamon.
Chicago Style (17th ed.) Zitazioa
Morris, David Morris. Measuring the Condition of the World's Poor: The Physical Quality of Life Index. New York: Pergamon, 1979.
MLA (9th ed.) Zitazioa
Morris, David Morris. Measuring the Condition of the World's Poor: The Physical Quality of Life Index. Pergamon, 1979.
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