Thomas, J. M., & Callan,Scott. (2009). Environmental economics (India ed.). Cengage Learning.
芝加哥风格引文Thomas, Janet M., 与 Callan,Scott. Environmental Economics. India ed. New Dehli: Cengage Learning, 2009.
MLA引文Thomas, Janet M., 与 Callan,Scott. Environmental Economics. India ed. Cengage Learning, 2009.
警告：这些引文格式不一定是100％准确.