@misc{indiciae89bd774d02c6,
  title = {Petrology of the Triassic Moenkopi Formation and related strata in the Colorado Plateau region, with a section on stratigraphy},
  author = {Robert Allen Cadigan and John Harris Stewart},
  year = {1971},
  doi = {10.3133/pp692},
  url = {https://pubs.usgs.gov/publication/pp692},
  note = {Source identifier: pp692}
}