APA引文

Singh, V., & Sharma, M. (1998). Mountain ecosystems: A scenario of unsustainability. Indus publishing company.

Chicago Edition Citation

Singh, Vir, and M.L Sharma. Mountain Ecosystems: A Scenario of Unsustainability. New Delhi: Indus publishing company, 1998.

MLA引文

Singh, Vir, and M.L Sharma. Mountain Ecosystems: A Scenario of Unsustainability. Indus publishing company, 1998.

警告：這些引文格式不一定是100％准確.