Abadi, S., Shukri Mat The, K., Mohd. Nasir, B., Huda, M., L. Ivanova, N., Indra Sari, T., Maseleno, A., Satria, F., & Muslihudin, M. (2018). Application model of k-means clustering: insights into promotion strategy of vocational high school. International Journal of Engineering & Technology, 7(2.27), 182-187. https://doi.org/10.14419/ijet.v7i2.11491