Dube, D. R. (1987). Agricultural geography: Issues and applications. Gain.
Chicago-čujuhus (17. p.)Dube, Dr. R.S. Agricultural Geography: Issues and Applications. Delhi: Gain, 1987.
MLA-čujuhus (9. p.)Dube, Dr. R.S. Agricultural Geography: Issues and Applications. Gain, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.