Fajgelj, Stanislav, and Bojan Janičić. “KakaoKTT: Set of SPSS Macros for Item Analysis - Classical Test Theory”. Primenjena psihologija 1, no. 3-4 (December 26, 2008): 207–222. Accessed November 21, 2024. https://primenjena.psihologija.ff.uns.ac.rs/index.php/pp/article/view/1190.