APA استشهاد

Day, R. H., & Singh, Z. (1977). Economic development adoptive process: The green revolution in the Indian Punjab. Cambridge University press.

استشهاد بنمط شيكاغو

Day, Richard H., و Ziderjit Singh. Economic Development Adoptive Process: The Green Revolution in the Indian Punjab. Cambridge: Cambridge University press, 1977.

MLA استشهاد

Day, Richard H., و Ziderjit Singh. Economic Development Adoptive Process: The Green Revolution in the Indian Punjab. Cambridge University press, 1977.