Smiley, D. F., & Gould, A. G. (1929). Community hygiene. The Macmillan company.
Cita Chicago Style (17a ed.)Smiley, Dean Franklin, y Adrian Gordon Gould. Community Hygiene. New York: The Macmillan company, 1929.
Cita MLA (8a ed.)Smiley, Dean Franklin, y Adrian Gordon Gould. Community Hygiene. The Macmillan company, 1929.
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