@misc{indiciae25de2a92cd10,
  title = {A spring aerial census of red foxes in North Dakota},
  author = {A.B. Sargeant and W.K. Pfeifer and S.H. Allen},
  year = {1975},
  doi = {10.2307/3800462},
  url = {https://pubs.usgs.gov/publication/1001292},
  note = {Source identifier: 1001292}
}