Gaya APA

Friis, , R, H. (2014). Epidemiology for public health practice (Far4) (5th ed.). Burlington, MA: Jones & Bartlett Learning.

Gaya MLA

Friis, , Robert, H.. "Epidemiology for public health practice (Far4)". 5th ed. Burlington, MA: Jones & Bartlett Learning, 2014. Text.