Cite
MLA (8th Edition)
Irwin, Rossman P. Geologic Map of MTM -15027, -20027, -25027, and -25032 Quadrangles, Margaritifer Terra Region of Mars. U.S. Department of the Interior, U.S. Geological Survey, 2009.
APA (7th Edition)
Irwin, R. P. I. (2009). Geologic map of MTM -15027, -20027, -25027, and -25032 quadrangles, Margaritifer Terra region of Mars. U.S. Department of the Interior, U.S. Geological Survey.
Chicago (17th Edition)
Irwin, Rossman P. “Geologic Map of MTM -15027, -20027, -25027, and -25032 Quadrangles, Margaritifer Terra Region of Mars.” Reston, Va.: U.S. Department of the Interior, U.S. Geological Survey, 2009.