@misc{indiciae7da136880af2,
  title = {Preliminary geologic map of the Thousand Oaks 7.5' Quadrangle, Southern California},
  author = {R. F. Yerkes and P. K. Showalter},
  year = {1991},
  doi = {10.3133/ofr91288},
  url = {https://pubs.usgs.gov/publication/ofr91288},
  note = {Source identifier: ofr91288}
}