Gupta, V. (1975). Physiological aspects of dryland farming. Oxford & IBH publishing co. pvt. ltd.
Dyfyniad Arddull ChicagoGupta, V.S. Physiological Aspects of Dryland Farming. New Delhi: Oxford & IBH publishing co. pvt. ltd, 1975.
Dyfyniad MLAGupta, V.S. Physiological Aspects of Dryland Farming. Oxford & IBH publishing co. pvt. ltd, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.