Nebel, B. J., & Wright, R. T. (2000). Environmental Science: The Way the World Works (7th ed.). Prentice Hall.
Chicago Style (17th ed.) ZitazioaNebel, Bernard J., eta Richard T. Wright. Environmental Science: The Way the World Works. 7th ed. Upper Saddle River, New Jersey: Prentice Hall, 2000.
MLA (9th ed.) ZitazioaNebel, Bernard J., eta Richard T. Wright. Environmental Science: The Way the World Works. 7th ed. Prentice Hall, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.