APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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