APA (7th ed.) Citation

Geological Survey (U.S.), United States. National Aeronautics and Space Administration, Planetary Geology Program (U.S.), Chapman, M. G., Masursky, H., & Dial, A. L. (1991). Geologic map of science study area 1B, west Mangala Valles Region of Mars (special MTM -08157). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), United States. National Aeronautics and Space Administration, Planetary Geology Program (U.S.), Mary G. Chapman, Harold Masursky, and Arthur L. Dial. Geologic Map of Science Study Area 1B, West Mangala Valles Region of Mars (special MTM -08157). Reston, Va.: The Survey, 1991.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of Science Study Area 1B, West Mangala Valles Region of Mars (special MTM -08157). The Survey, 1991.