Anggoro, Y., Zahroh, A. ., Rahman, A. ., Selan, S., & Attruk, M. F. H. (2025). Preparation of standard operational procedures for finance, human resources and marketing at PT SMS Malang. Arus Jurnal Sosial Dan Humaniora, 5(3), 4759–4765. https://doi.org/10.57250/ajsh.v5i3.2000