Leighton, Jacqueline P., W. Todd Rogers, and Thomas O. Maguire. “Assessment of Student Problem-Solving on Ill-Defined Tasks”. Alberta Journal of Educational Research 45, no. 4 (December 1, 1999). Accessed April 23, 2024. https://journalhosting.ucalgary.ca/index.php/ajer/article/view/54712.