APA (7th ed.) Citation

Geological Survey (U.S.) & Maxwell, C. H. (1986). Geologic map of El Malpais lava field and surrounding areas, Cibola County, New Mexico. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Charles H. Maxwell. Geologic Map of El Malpais Lava Field and Surrounding Areas, Cibola County, New Mexico. Reston, Va.: The Survey, 1986.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Charles H. Maxwell. Geologic Map of El Malpais Lava Field and Surrounding Areas, Cibola County, New Mexico. The Survey, 1986.