Gaya APA

Swanson, C, P., , . (1993). Safety and environmental health macmillan health encyclopedia jilid ì 8 . New York: New York: Macmillan; 1993.

Gaya MLA

Swanson, Carl, P.., , . "Safety and environmental health macmillan health encyclopedia jilid ì 8". New York: New York: Macmillan; 1993, 1993. Text.