@misc{indiciaeb34cf8463bee,
  title = {Geologic map of the Signal quadrangle, Mohave County, Arizona},
  author = {Ivo Lucchitta and Neil Suneson},
  year = {1994},
  doi = {10.3133/gq1709},
  url = {https://pubs.usgs.gov/publication/gq1709},
  note = {Source identifier: gq1709}
}