Cita APA

Gordon, R. L. (1987). World coal: Economics, policies, and prospects. Cambridge University Press.

Citación estilo Chicago

Gordon, Richard L. World Coal: Economics, Policies, and Prospects. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.

Cita MLA

Gordon, Richard L. World Coal: Economics, Policies, and Prospects. Cambridge University Press, 1987.

Warning: These citations may not always be 100% accurate.