Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.