AbdulAziz Dabdoub, Marwan, and مروان. “Use of Suggested Correlation Matrix in Factor Analysis”. Journal of Education and Science (JES) 23, no. 2 (June 1, 2010): 162–181. Accessed August 4, 2025. https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17058.