@misc{indiciae729cedfa3aba,
  title = {Stratigraphy of the uppermost Triassic and the Jurassic rocks of the Navajo country},
  author = {J. W. Harshbarger and C.A. Repenning and J. H. Irwin},
  year = {1957},
  doi = {10.3133/pp291},
  url = {https://pubs.usgs.gov/publication/pp291},
  note = {Source identifier: pp291}
}