Nebel, B. J. (1990). Environmental science: The way the world works (3rd.ed.). Prentice Hall.
Chicago Style (17th ed.) CitationNebel, Bernard J. Environmental Science: The Way the World Works. 3rd.ed. New Jersey: Prentice Hall, 1990.
MLA (9th ed.) CitationNebel, Bernard J. Environmental Science: The Way the World Works. 3rd.ed. Prentice Hall, 1990.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.