@misc{indiciae3df297db547f,
  title = {Study difficulty. Psychiatric and psychological aspects.},
  author = {J R Handforth},
  year = {1978},
  doi = {10.1177/070674377802300806},
  url = {https://pubmed.ncbi.nlm.nih.gov/719589/},
  note = {Source identifier: 719589}
}