Dawber T, Rogers WT, Carbonaro M. Robustness of Lord’s Formulas for Item Difficulty and Discrimination Conversions Between Classical and Item Response Theory Models. AJER [Internet]. 2010 May 20 [cited 2024 May 18];55(4). Available from: https://journalhosting.ucalgary.ca/index.php/ajer/article/view/55343