APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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