Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.