@misc{indiciaea4aa650ef465,
  title = {Geologic map of the Highlands Ranch quadrangle, Arapahoe and Douglas Counties, Colorado},
  author = {John O. Maberry and Robert M. Lindvall},
  year = {1977},
  doi = {10.3133/gq1413},
  url = {https://pubs.usgs.gov/publication/gq1413},
  note = {Source identifier: gq1413}
}