APA (7th ed.) Citation

Tarr, W. A. (1930). Introductory economic geology. McGraw-Hill.

Chicago Style (17th ed.) Citation

Tarr, William Arthur. Introductory Economic Geology. New York: McGraw-Hill, 1930.

MLA (9th ed.) Citation

Tarr, William Arthur. Introductory Economic Geology. McGraw-Hill, 1930.