Chhokar,kiran B. (2004). Underrstanding environment. SAGE Publications.
Chicago-čujuhus (17. p.)Chhokar,kiran B. Underrstanding Environment. SAGE Publications, 2004.
MLA-čujuhus (9. p.)Chhokar,kiran B. Underrstanding Environment. SAGE Publications, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.