“Pentingnya Standard Operating Procedure (SOP) Terhadap Kedisiplinan Karyawan Di Kafe Jamu Acaraki” (2024) Journal Management SMC, 2(1). Tersedia pada: https://e-journal.lemondial.ac.id/index.php/smc/article/view/46 (Diakses: 5 Juni 2026).