@misc{indiciae5deee1068a6b,
  title = {Geologic map of the Pigeon Canyon, Nevershine Mesa, and Snap Point Wilderness Study Areas, Mohave County, Arizona},
  author = {Ivo Lucchitta and L. S. Beard and Hugh J. Rieck},
  year = {1986},
  doi = {10.3133/mf1860b},
  url = {https://pubs.usgs.gov/publication/mf1860B},
  note = {Source identifier: mf1860B}
}