@misc{indiciae9676be7cb757,
  title = {Stratigraphy of Triassic and associated formations in part of the Colorado Plateau region, with a section on sedimentary petrology},
  author = {John Harris Stewart and G.A. Williams and H. F. Albee and O. B. Raup and Robert Allen Cadigan},
  year = {1959},
  doi = {10.3133/b1046q},
  url = {https://pubs.usgs.gov/publication/b1046Q},
  note = {Source identifier: b1046Q}
}