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. Sudbury, MA: Jones & Bartlett Learning, 2012.

Citatione MLA (8a ed.)

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