APA-viite

Gupta, O. P. (2001). Weedy aquatic plants: Their utility, menance and management.

Chicago-tyylinen lähdeviittaus

Gupta, O P. Weedy Aquatic Plants: Their Utility, Menance and Management. Agrobios India, 2001.

MLA-viite

Gupta, O P. Weedy Aquatic Plants: Their Utility, Menance and Management. 2001.