Suhailan, S, S Abdul Samad, M A Burhanuddin, and M Makhtar. 2018. “A Hybrid Model of Ordinal Ranking-Based Clustering Using G+Rank K-Means”. International Journal of Engineering and Technology 7 (2.15): 41-44. https://doi.org/10.14419/ijet.v7i2.15.11209.