APA-referens

Gupta, O. P., & Lamba, P. S. (1978). Modern weed science: In the tropics and subtropics (1.). Today and Tomarrows.

Chicago-stil citat

Gupta, O P., och P S. Lamba. Modern Weed Science: In the Tropics and Subtropics. 1. New Delhi: Today and Tomarrows, 1978.

MLA-referens

Gupta, O P., och P S. Lamba. Modern Weed Science: In the Tropics and Subtropics. 1. Today and Tomarrows, 1978.