@misc{indiciaecf8babbba64e,
  title = {Discussion in large classes via public-address system.},
  author = {K Smith},
  year = {1968},
  doi = {10.1037//0003-066x.23.9.692},
  url = {https://pubmed.ncbi.nlm.nih.gov/4175591/},
  note = {Source identifier: 4175591}
}