APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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