Rangkuti, Abdul Haris, Zefany Athalia, Tara E. Thalia, Caitlyn E. Wiharja, and Abid Rakhmansyah. “Economical and Efficient Multiple-Choice Question Grading System Using Image Processing Technique”. International Journal of Intelligent Systems and Applications in Engineering 11, no. 3 (July 16, 2023): 193–198. Accessed July 22, 2024. https://ijisae.org/index.php/IJISAE/article/view/3159.