Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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