APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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