R. Hassan, S. Khalil Abd, W. Wahi, and F. Hazwani Siran, “The Use of Messaging Applications among University Students: A Case at Universiti Kebangsaan Malaysia”, IJET, vol. 7, no. 3.20, pp. 925–931, Sep. 2018, doi: 10.14419/ijet.v7i3.20.28419.