De Santis, Annamaria, Katia Sannicandro, Claudia Bellini, and Tommaso Minerva. “Trends in the Use of Multivariate Analysis 
in Educational Research: A Review of Methods and Applications 
in 2018-2022”. Journal of e-Learning and Knowledge Society 20, no. 1 (June 30, 2024): 47-55. Accessed July 3, 2024. http://je-lks.org/ojs/index.php/Je-LKS_EN/article/view/1135946.