Nebel, B. J., & Wright, R. T. (1998). Environmental science: The way the world works (6th ed.). Prentice Hall.
Čikaški stil citiranja (17. izdanje)Nebel, Bernard J., i Richard T. Wright. Environmental Science: The Way the World Works. 6th ed. New Jersey: Prentice Hall, 1998.
MLA način citiranja (9. izdanje)Nebel, Bernard J., i Richard T. Wright. Environmental Science: The Way the World Works. 6th ed. Prentice Hall, 1998.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.