@misc{indiciaee17ef1be8843,
  title = {Quaternary geologic map of the Shelby 1° x 2° quadrangle, Montana},
  author = {David S. Fullerton and Roger B. Colton and Charles A. Bush},
  year = {2013},
  doi = {10.3133/ofr20121170},
  url = {https://pubs.usgs.gov/publication/ofr20121170},
  note = {Source identifier: ofr20121170}
}