@misc{indiciae360011a03797,
  title = {Preliminary Geologic Map of the Topanga 7.5' Quadrangle, Southern California: A Digital Database},
  author = {R.F. Yerkes and R. H. Campbell},
  year = {1995},
  doi = {10.3133/ofr9591},
  url = {https://pubs.usgs.gov/publication/ofr9591},
  note = {Source identifier: ofr9591}
}