APA-referens (7:e uppl.)

Nebel, B. J., & Wright, R. T. (2000). Environmental science: The way the world works (7th ed.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Nebel, Bernard J., och Richard T. Wright. Environmental Science: The Way the World Works. 7th ed. Upper Saddle River, N.J: Prentice-Hall, 2000.

MLA-referens (9:e uppl.)

Nebel, Bernard J., och Richard T. Wright. Environmental Science: The Way the World Works. 7th ed. Prentice-Hall, 2000.