@misc{indiciae396cefeb6c01,
  title = {Geologic map of the San Simon Quadrangle and parts of the Summit Hills and Mondel quadrangles, Cochise, Graham, and Greenlee counties, Arizona, and Hidalgo County, New Mexico},
  author = {D.H. Richter and Viki A. Lawrence and Harald Drewes and T.H. Young and M.S. Enders and P.E. Damon and C.H. Thorman},
  year = {1990},
  doi = {10.3133/i1951},
  url = {https://pubs.usgs.gov/publication/i1951},
  note = {Source identifier: i1951}
}