Iqbal, M., A. Hamid, N. Herlinawati, M. Azis, M. Rezki, and A. Mustopa. “MOBILE-BASED ONLINE EXAM APPLICATIONS USING PROBLEM WEIGHT CLASSIFICATION TECHNIQUES, GROUPING AND RANDOMIZING”. Techno Nusa Mandiri: Journal of Computing and Information Technology, Vol. 17, no. 1, Mar. 2020, pp. 43-50, doi:10.33480/techno.v17i1.1229.