APA引文

Upton, M. (1996). The economics of tropical farming systems. Cambridge University Press.

Chicago Style (17th ed.) Citation

Upton, Martin. The Economics of Tropical Farming Systems. Cambridge ; New York: Cambridge University Press, 1996.

MLA引文

Upton, Martin. The Economics of Tropical Farming Systems. Cambridge University Press, 1996.

警告：這些引文格式不一定是100％准確.