Lua APA (7ú heag.)

(1971). Man and the environment/Frederick A. Rasmussen,Paul Holobinko,Victor M.Showalter. Houghton Mifflin.

Lua i Stíl Chicago (17ú heag.)

Man and the Environment/Frederick A. Rasmussen,Paul Holobinko,Victor M.Showalter. New York: Houghton Mifflin, 1971.

Lua MLA (9ú heag.)

Man and the Environment/Frederick A. Rasmussen,Paul Holobinko,Victor M.Showalter. Houghton Mifflin, 1971.

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