APA (7th ed.) Citation

Geological Survey (U.S.), United States. National Aeronautics and Space Administration, Planetary Geology and Geophysics Program (U.S.), Greeley, R., & Guest, J. (1987). Geologic map of the eastern equatorial region of Mars. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), United States. National Aeronautics and Space Administration, Planetary Geology and Geophysics Program (U.S.), Ronald Greeley, and John Guest. Geologic Map of the Eastern Equatorial Region of Mars. Reston, Va.: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Eastern Equatorial Region of Mars. The Survey, 1987.