Sitompul, M. P. U. ., Sitompul, O. S. ., & Situmorang, Z. . (2022). Optimization of Determination Against K-Means Cluster Algorithm using Elbow Creation. Jurnal Teknik Informatika C.I.T Medicom, 14(1), 1–9. https://doi.org/10.35335/cit.Vol14.2022.176.pp1-9