APA استشهاد

Tom, T. (2000). Environmental and natural resources economics (5th ed.). Addison-Wesley.

استشهاد بنمط شيكاغو

Tom, Tietenberg. Environmental and Natural Resources Economics. 5th ed. Massachusetts: Addison-Wesley, 2000.

MLA استشهاد

Tom, Tietenberg. Environmental and Natural Resources Economics. 5th ed. Addison-Wesley, 2000.