Gaya APA

Wallace, R, B. (2008). Maxcy-Rosenau-Last Public Health & Preventive Medicine.Fifteeth edition . New York,Chicago, San Franisco: McGrawHill.

Gaya MLA

Wallace, Robert, B.. "Maxcy-Rosenau-Last Public Health & Preventive Medicine.Fifteeth edition". New York,Chicago, San Franisco: McGrawHill, 2008. Text.