APA引文

Conrad, J. M., & Clark, C. W. (1987). Natural resource economics: Notes and problems. Cambridge [Cambridgeshire] ; New York: Cambridge University Press.

Trích dẫn kiểu Chicago

Conrad, Jon M., và Colin W. Clark. Natural Resource Economics: Notes and Problems. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.

MLA引文

Conrad, Jon M., và Colin W. Clark. Natural Resource Economics: Notes and Problems. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.