Rasid Mamat, Abd, Fatma Susilawati Mohamed, Mohamad Afendee Mohamed, Norkhairani Mohd Rawi, and Mohd Isa Awang. 2018. “Silhouette Index for Determining Optimal K-Means Clustering on Images in Different Color Models”. International Journal of Engineering & Technology 7 (2.14): 105-9. https://doi.org/10.14419/ijet.v7i2.14.11464.