@misc{indiciaedc1cb3188580,
  title = {Reconnaissance geologic map of the Gu Achi Quadrangle, Pima County, Arizona},
  author = {J.A. Briskey and Gordon Haxel and J.A. Peterson and T. G. Theodore},
  year = {1978},
  doi = {10.3133/mf965},
  url = {https://pubs.usgs.gov/publication/mf965},
  note = {Source identifier: mf965}
}