@misc{indiciae27b0b696d9ee,
  title = {Geologic map and cross sections of the central and southern Highland Mountains, southwestern Montana},
  author = {J.M. O’Neill and M. R. Klepper and H.W. Smedes and D.L. Hanneman and G.D. Fraser and H. H. Mehnert},
  year = {1996},
  doi = {10.3133/i2525},
  url = {https://pubs.usgs.gov/publication/i2525},
  note = {Source identifier: i2525}
}