APA Style

Tietenberg, T. (2012). environmental and natural resource economics by tom tietenberg 9th edition (9th ed.). Upper Saddle River, N.J: Pearson Education.

MLA Style

Tietenberg, Tom. "environmental and natural resource economics by tom tietenberg 9th edition". 9th ed. Upper Saddle River, N.J: Pearson Education, 2012. Text.