Citazione Stile APA (7a Edizione)

Friis, R. H. (2012). Essentials of environmental health (2nd ed.). Jones & Bartlett learning.

Citazione stile Chigago Style (17a edizione)

Friis, Robert H. Essentials of Environmental Health. 2nd ed. Burlington: Jones & Bartlett learning, 2012.

Citatione MLA (9a ed.)

Friis, Robert H. Essentials of Environmental Health. 2nd ed. Jones & Bartlett learning, 2012.