@misc{indiciaed9e68f9e2722,
  title = {Preliminary geologic map of the Newbury Park 7.5' quadrangle, Southern California: A digital database},
  author = {R. F. Yerkes and R. H. Campbell},
  year = {1997},
  doi = {10.3133/ofr97459},
  url = {https://pubs.usgs.gov/publication/ofr97459},
  note = {Source identifier: ofr97459}
}