@misc{indiciae109664a19554,
  title = {Herpetofauna survey of Petrified Forest National Park, Arizona},
  author = {C.A. Drost and Trevor Persons and E.M. Nowak},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70194596},
  note = {Source identifier: 70194596}
}