H. K. Bin Kadri, R. Binti Mohamed, S. F. Binti Shafie, N. Binti Yahya, and Z. Binti Zaini, “Impoliteness Strategies Inflicted by Twitter Users: The Case of Interaction with Malaysian Royal Family”, e-jbl, vol. 3, no. 2, pp. 94-103, Nov. 2021.