Roy, B. (2011). Man made global crisis: Environmental effects on global warming. Monalisa Enterprises.
Chicago-čujuhus (17. p.)Roy, Bhavna. Man Made Global Crisis: Environmental Effects on Global Warming. New Delhi: Monalisa Enterprises, 2011.
MLA-čujuhus (9. p.)Roy, Bhavna. Man Made Global Crisis: Environmental Effects on Global Warming. Monalisa Enterprises, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.