Morris, M. D. (1979). Measuring the condition of the world's poor: The physical quality of life index. Published for the Overseas Development Council by Pergamon Press.

Morris, Morris David. Measuring the Condition of the World's Poor: The Physical Quality of Life Index. New York: Published for the Overseas Development Council by Pergamon Press, 1979.

Morris, Morris David. Measuring the Condition of the World's Poor: The Physical Quality of Life Index. Published for the Overseas Development Council by Pergamon Press, 1979.