Cahyana, Bambang Eka, Umar Nimran, Hamidah Nayati i Utami, and Mohammad Iqbal. “Hybrid Cluster Analysis of Customer Segmentation of Sea Transportation Users”. Journal of Economics, Finance and Administrative Science 25, no. 50 (December 1, 2020): 321–337. Accessed May 4, 2024. https://revistas.esan.edu.pe/index.php/jefas/article/view/46.