APA引文

Thomas, J. M., & Callan,Scott. (2009). Environmental economics (India ed.). Cengage Learning.

Chicago Style (17th ed.) Citation

Thomas, Janet M., and Callan,Scott. Environmental Economics. India ed. New Dehli: Cengage Learning, 2009.

MLA引文

Thomas, Janet M., and Callan,Scott. Environmental Economics. India ed. Cengage Learning, 2009.

警告：這些引文格式不一定是100％准確.