@misc{indiciae96ecc029beac,
  title = {Study habits and introversion-extroversion.},
  author = {M Estabrook and R Sommer},
  year = {1966},
  doi = {10.2466/pr0.1966.19.3.750},
  url = {https://pubmed.ncbi.nlm.nih.gov/5981077/},
  note = {Source identifier: 5981077}
}