References
- Engel C.E. Controversy: for the use of objectives. Medical Teacher 1980; 2: 232–237
- Paivio A.R., Rogers T.B., Smyth P.C. Why are pictures easier to recall than words. Psychonomic Science 1968; 11: 137–138
- Simpson M.A. Controversy: objections to objectives. Medical Teacher 1980; 1: 229–231