@misc{indiciae27e499537501,
  title = {A methodological note on research design.},
  author = {G Welty},
  year = {1969},
  doi = {10.1080/19485565.1969.9987809},
  url = {https://pubmed.ncbi.nlm.nih.gov/5810363/},
  note = {Source identifier: 5810363}
}