APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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