APA引文

Botkin, D. B., & Keller, E. A. (1998). Environmental science: Earth as a living planet (2nd ed.). New York: J. Wiley & Sons.

Trích dẫn kiểu Chicago

Botkin, Daniel B., và Edward A. Keller. Environmental Science: Earth As a Living Planet. 2nd ed. New York: J. Wiley & Sons, 1998.

MLA引文

Botkin, Daniel B., và Edward A. Keller. Environmental Science: Earth As a Living Planet. 2nd ed. New York: J. Wiley & Sons, 1998.

警告：这些引文格式不一定是100％准确.