APA引文

Sharma, P. D. (1997). Environmental biology and toxicology: A textbook for university students.

Chicago Edition Citation

Sharma, P D. Environmental Biology and Toxicology: A Textbook for University Students. Narendra Publishing House, Delhi, 1997.

MLA引文

Sharma, P D. Environmental Biology and Toxicology: A Textbook for University Students. 1997.

警告：這些引文格式不一定是100％准確.