@misc{indiciae55f6f5012c2a,
  title = {A partially self-instructional system that any teacher can develop and implement.},
  author = {T Stachnik and R C Simons and C Ripstra},
  year = {1976},
  doi = {10.1111/j.1365-2923.1976.tb00525.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1263883/},
  note = {Source identifier: 1263883}
}