Fawcett, J. T. (1973). Psychological perspectives on population. Basic Books.
Lua i Stíl Chicago (17ú heag.)Fawcett, James T. Psychological Perspectives on Population. New York: Basic Books, 1973.
Lua MLA (9ú heag.)Fawcett, James T. Psychological Perspectives on Population. Basic Books, 1973.
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