@misc{indiciae10e8678393dc,
  title = {Assessing perceived physical environmental variables that may influence physical activity.},
  author = {J F Sallis and M F Johnson and K J Calfas and S Caparosa and J F Nichols},
  year = {1997},
  doi = {10.1080/02701367.1997.10608015},
  url = {https://pubmed.ncbi.nlm.nih.gov/9421846/},
  note = {Source identifier: 9421846}
}