@misc{indiciae01aae1097266,
  title = {Mineral resources of the Gibraltar Mountain and Planet Peak Wilderness Study Areas, La Paz County, Arizona},
  author = {Robert G. Eppinger and Jocelyn A. Peterson and H. Richard Blank and K. Eric Livo and Daniel H. Knepper and James A. Pitkin and Jon E. Spencer and Stephen J. Reynolds and Michael J. Grubensky and Terry J. Kreidler and David C. Scott},
  year = {1990},
  doi = {10.3133/b1704b},
  url = {https://pubs.usgs.gov/publication/b1704B},
  note = {Source identifier: b1704B}
}