Rao, D. P. S. (1996). A text book of geology. Discovery.
Chicago-čujuhus (17. p.)Rao, Dr. P.C. Sanjeeva. A Text Book of Geology. New Delhi: Discovery, 1996.
MLA-čujuhus (9. p.)Rao, Dr. P.C. Sanjeeva. A Text Book of Geology. Discovery, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.