Hodge, P. L., Hauser, P. M., & Douglas, P. H. (1968). The challenge of America's metropolitan population outlook, 1960 to 1985. New York: Praeger.
Παραπομπή Chicago StyleHodge, Patricia Leavey, Philip Morris Hauser, and Paul H. Douglas. The Challenge of America's Metropolitan Population Outlook, 1960 to 1985. New York: Praeger, 1968.
Παραπομπή MLAHodge, Patricia Leavey, Philip Morris Hauser, and Paul H. Douglas. The Challenge of America's Metropolitan Population Outlook, 1960 to 1985. New York: Praeger, 1968.
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