@misc{indiciaef3e55893fd73,
  title = {Geologic map of the Cameron 30' x 60' quadrangle, Coconino County, northern Arizona},
  author = {George H. Billingsley and Susan S. Priest and Tracey J. Felger},
  year = {2007},
  doi = {10.3133/sim2977},
  url = {https://pubs.usgs.gov/publication/sim2977},
  note = {Source identifier: sim2977}
}