@misc{indiciae868c34207e1a,
  title = {Geologic map of the Mount Logan Quadrangle, northern Mohave County, Arizona},
  author = {G. H. Billingsley},
  year = {1997},
  doi = {10.3133/ofr97426},
  url = {https://pubs.usgs.gov/publication/ofr97426},
  note = {Source identifier: ofr97426}
}