Lua APA (7ú heag.)
Nebel, B. J., & Wright, R. T. (1996). Enviromental science: The way the world works (5th ed.). Prentice - hall.
Lua i Stíl Chicago (17ú heag.)
Nebel, Bernard J., agus Richard T. Wright. Enviromental Science: The Way the World Works. 5th ed. New Jersey: Prentice - hall, 1996.
Lua MLA (9ú heag.)
Nebel, Bernard J., agus Richard T. Wright. Enviromental Science: The Way the World Works. 5th ed. Prentice - hall, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.