N. Aziz, Z. Zain, R. M. Z. Raja Mafuzi, A. M. Mustapa, N. H. Mohd Najib, and N. F. Nik Lah, “Prioritizing Causes of Procrastination among University Students: An Empirical Analysis”, JTEC, vol. 9, no. 2-12, pp. 179–183, Sep. 2017.