APA (7th ed.) Citation

Tarr, W. A. (1938). Introduction to economic geology (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Tarr, W. A. Introduction to Economic Geology. 2nd ed. New York ; London: McGraw-Hill, 1938.

MLA (9th ed.) Citation

Tarr, W. A. Introduction to Economic Geology. 2nd ed. McGraw-Hill, 1938.