Não informado. (1953). Social and economics studies. University of West Indies, Institute of Social and Economic Research.
Chicago-referens (17:e uppl.)Não informado. Social and Economics Studies. Kingston: University of West Indies, Institute of Social and Economic Research, 1953.
MLA-referens (8:e uppl.)Não informado. Social and Economics Studies. University of West Indies, Institute of Social and Economic Research, 1953.
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