@misc{indiciae81beb21842cf,
  title = {Designing interactive materials for cost-effective learning.},
  author = {J R Forsdale},
  year = {1981},
  doi = {10.1353/aad.2012.1084},
  url = {https://pubmed.ncbi.nlm.nih.gov/6794342/},
  note = {Source identifier: 6794342}
}