@misc{indiciae3a7174b52df5,
  title = {Geologic map of the Sonora quadrangle, Pinal and Gila Counties, Arizona},
  author = {Henry Rowland Cornwall and Norman G. Banks and C. H. Phillips},
  year = {1971},
  doi = {10.3133/gq1021},
  url = {https://pubs.usgs.gov/publication/gq1021},
  note = {Source identifier: gq1021}
}