Asli, Nurul Fariena, et al. “Rater Errors in Rating Processandthe Needsto Be Identified Among Student Raters”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 6140-58, https://www.cibgp.com/index.php/1323-6903/article/view/1502.