@misc{indiciae1de506b762e2,
  title = {Learning principles and teaching models.},
  author = {L M Lieberman},
  year = {1982},
  doi = {10.1177/002221948201500816},
  url = {https://pubmed.ncbi.nlm.nih.gov/7142809/},
  note = {Source identifier: 7142809}
}