@misc{indiciae01e27c5aa54f,
  title = {Geology of Great Sitkin Island, Alaska},
  author = {Frank S. Simons and Donald E. Mathewson},
  year = {1955},
  doi = {10.3133/b1028b},
  url = {https://pubs.usgs.gov/publication/b1028B},
  note = {Source identifier: b1028B}
}