@misc{indiciae8d1984dd7a57,
  title = {Geologic map of the Sedan quadangle, Gallatin and Park Counties, Montana},
  author = {Betty Skipp and D. R. Lageson and W. J. McMannis},
  year = {1999},
  doi = {10.3133/i2634},
  url = {https://pubs.usgs.gov/publication/i2634},
  note = {Source identifier: i2634}
}