Citazione Stile APA (7a Edizione)

American Institute of Professional Geologists. (1979). The Professional geologist. American Institute of Professional Geologists.

Citazione stile Chigago Style (17a edizione)

American Institute of Professional Geologists. The Professional Geologist. [Golden, Colo.]: American Institute of Professional Geologists, 1979.

Citatione MLA (9a ed.)

American Institute of Professional Geologists. The Professional Geologist. American Institute of Professional Geologists, 1979.