@misc{indiciaeee8f689e9e45,
  title = {Visitor spending effects: assessing and showcasing America's investment in national parks},
  author = {Lynne Koontz and Catherine Cullinane Thomas and Pamela Ziesler and Jeffrey Olson and Bret Meldrum},
  year = {2017},
  doi = {10.1080/09669582.2017.1374600},
  url = {https://pubs.usgs.gov/publication/70194202},
  note = {Source identifier: 70194202}
}