APA (7th ed.) Citation

Falk, A. L., & Miller, R. L. (1975). Worldwide directory of national earth-science agencies. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Falk, Anne Lucas, and Ralph L. Miller. Worldwide Directory of National Earth-science Agencies. Reston, Va.: U.S. Geological Survey, 1975.

MLA (9th ed.) Citation

Falk, Anne Lucas, and Ralph L. Miller. Worldwide Directory of National Earth-science Agencies. U.S. Geological Survey, 1975.