Muhd Adnan, H. M., H. . Yaacob, and N. S. Awang Abu Bakar. “A Systematic Literature Review on Emotional Text for Malay Corpus”. International Journal on Perceptive and Cognitive Computing, vol. 7, no. 1, Sept. 2021, pp. 132-6, https://journals.iium.edu.my/kict/index.php/IJPCC/article/view/222.