Day, R. H., & Singh, Z. (1977). Economic development adoptive process: The green revolution in the Indian Punjab. Cambridge University press.
Dyfyniad Arddull ChicagoDay, Richard H., and Ziderjit Singh. Economic Development Adoptive Process: The Green Revolution in the Indian Punjab. Cambridge: Cambridge University press, 1977.
Dyfyniad MLADay, Richard H., and Ziderjit Singh. Economic Development Adoptive Process: The Green Revolution in the Indian Punjab. Cambridge University press, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.