APA (7th ed.) Citation

Tarr, W. A. (1938). Introductory economic geology. McGraw-Hill Book Company.

Chicago Style (17th ed.) Citation

Tarr, William Arthur. Introductory Economic Geology. New York: McGraw-Hill Book Company, 1938.

MLA (9th ed.) Citation

Tarr, William Arthur. Introductory Economic Geology. McGraw-Hill Book Company, 1938.