Lua APA (7ú heag.)

Helmer, J., & Eddington, N. A. (1973). Urbanman: The psychology of urban survival. Free Press.

Lua i Stíl Chicago (17ú heag.)

Helmer, John, agus Neil A. Eddington. Urbanman: The Psychology of Urban Survival. New York: Free Press, 1973.

Lua MLA (9ú heag.)

Helmer, John, agus Neil A. Eddington. Urbanman: The Psychology of Urban Survival. Free Press, 1973.

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