APA (7e ed.) Bronvermelding

Roy, B. (2011). Man made global crisis: Environmental effects on global warming. Monalisa Enterprises.

Chicago (17e ed.) Bronvermelding

Roy, Bhavna. Man Made Global Crisis: Environmental Effects on Global Warming. New Delhi: Monalisa Enterprises, 2011.

MLA (9e ed.) Bronvermelding

Roy, Bhavna. Man Made Global Crisis: Environmental Effects on Global Warming. Monalisa Enterprises, 2011.