@misc{indiciae8c3cfe475f71,
  title = {Geology of the Maddux quadrangle, Bearpaw Mountains, Blaine County, Montana},
  author = {Bruce Bryant and Robert George Schmidt and William Thomas Pecora},
  year = {1960},
  doi = {10.3133/b1081c},
  url = {https://pubs.usgs.gov/publication/b1081C},
  note = {Source identifier: b1081C}
}