Cita APA

Raj, G., & Trivedi, P. R. (1992). Encyclopaedia of Environmental sciences.

Citación estilo Chicago

Raj, Gurdeep, y P R. Trivedi. Encyclopaedia of Environmental Sciences. New Delhi, Akashdeep, 1992.

Cita MLA

Raj, Gurdeep, y P R. Trivedi. Encyclopaedia of Environmental Sciences. 1992.