Varma,O P. (1973). Economic and regional geography of India. Sterling.
Dyfyniad Arddull ChicagoVarma,O P. Economic and Regional Geography of India. New Delhi: Sterling, 1973.
Dyfyniad MLAVarma,O P. Economic and Regional Geography of India. Sterling, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.