Suhirwan, Suhirwan, and Bambang Suharjo. “Analysis of Internet Network Technology Online Training for Indonesian Navy Information Technology Employees Using Hierarchical Clustering ”. Jurnal Studi Guru dan Pembelajaran 4, no. 2 (August 3, 2021): 370–377. Accessed July 8, 2025. https://www.e-journal.my.id/jsgp/article/view/1229.