APA-viite

Trivedy, R. K. (1987). Practical methods in ecology and environmental science. Environmental publications.

Chicago-tyylinen lähdeviittaus

Trivedy, R K. Practical Methods in Ecology and Environmental Science. Karad: Environmental publications, 1987.

MLA-viite

Trivedy, R K. Practical Methods in Ecology and Environmental Science. Environmental publications, 1987.