@misc{indiciae26682461ce5e,
  title = {Day users in the backcountry: The neglected park visitor},
  author = {J.W. Roggenbuck and J. L. Marion and R.E. Manning},
  year = {1994},
  url = {https://pubs.usgs.gov/publication/5223255},
  note = {Source identifier: 5223255}
}