APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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