APA (7e ed.) Bronvermelding

Nebel, B. J. (1990). Environmental science: The way the world works (3rd.ed.). Prentice Hall.

Chicago (17e ed.) Bronvermelding

Nebel, Bernard J. Environmental Science: The Way the World Works. 3rd.ed. New Jersey: Prentice Hall, 1990.

MLA (9e ed.) Bronvermelding

Nebel, Bernard J. Environmental Science: The Way the World Works. 3rd.ed. Prentice Hall, 1990.