Al-Sharqi, L. M., K. Hashim, and P. S. Ahmed. “Improving the Learning Environment at a University in Saudi Arabia: Identifying Factors That Impede or Motivate Learning”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 19, no. 2, Jan. 2015, pp. 234-49, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/3370.