Rom, W. N. (1992). Environmental and occupational medicine (2nd ed.). Little, Brown.
Lua i Stíl Chicago (17ú heag.)Rom, William N. Environmental and Occupational Medicine. 2nd ed. Boston: Little, Brown, 1992.
Lua MLA (8ú heag.)Rom, William N. Environmental and Occupational Medicine. 2nd ed. Little, Brown, 1992.
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