@misc{indiciaed108cba006a7,
  title = {Geologic map of the southwestern Moenkopi Plateau and southern Ward Terrace, Coconino County, Arizona},
  author = {G. H. Billingsley},
  year = {1987},
  doi = {10.3133/i1793},
  url = {https://pubs.usgs.gov/publication/i1793},
  note = {Source identifier: i1793}
}