@misc{indiciae98193e6d2d78,
  title = {A knowledge engineering taxonomy for intelligent tutoring system development},
  author = {Fink, Pamela K. and Herren, L. Tandy},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19960007813},
  note = {Source identifier: 19960007813}
}