Apollo 15 Preliminary Science Report, 1972, NASA SP-289, Scientific and Technical Information Office, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, Washington, D.C.
usgs.gov
planetarynames.wr.usgs.gov
St. George, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)