Andi Hermawan, A. Muwahid Muhammadi, and Briliantina Indrati. 2023. “Modeling and Optimization of Service Investigation Services: Empirical Study Using Pop-Hrm Approach at Head of Private Smk School in Bogor District, Indonesia”. International Journal of Business and Social Science Research 4 (9):15-28. https://doi.org/10.47742/ijbssr.v4n9p2.