@misc{indiciae01cc5e3e2127,
  title = {Introversion-extraversion and volunteering for testing.},
  author = {R W Amsay},
  year = {1970},
  doi = {10.1111/j.2044-8260.1970.tb00647.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5488968/},
  note = {Source identifier: 5488968}
}