APA aipamena

Singh, G., & Inderjeet Kaur Sethi. (1992). Topics and terms in enviornmental science. Commonwealth.

Chicago Style aipamena

Singh, Gurcharan, and Inderjeet Kaur Sethi. Topics and Terms in Enviornmental Science. New Delhi: Commonwealth, 1992.

MLA aipamena

Singh, Gurcharan, and Inderjeet Kaur Sethi. Topics and Terms in Enviornmental Science. Commonwealth, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.