M. N. Jaffar, A. Ab Rahman, M. A. Zakaria, M. J. Mohd Faisal Yeap, and M. F. Abd Shakor, “Tahap Keberkesanan Gamifikasi Global Halal Game (GHG) Dalam Kalangan Peserta Program Halal Eksekutif Profesional (Effectiveness Level of Gamification Global Halal Game (GHG) Among Professional Halal Training Programme Participants)”, UMRAN, vol. 7, no. 3, pp. 45–58, Oct. 2020.