APA Citation

Emmons, W. H. (1940). The Principles of economics geology. New York: McGraw-Hill.

Chicago Style Citation

Emmons, William Harvey. The Principles of Economics Geology. New York: McGraw-Hill, 1940.

MLA Citation

Emmons, William Harvey. The Principles of Economics Geology. New York: McGraw-Hill, 1940.

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