Majestika, Aulia Qisthi, and Farida. “ANALISA PELAKSANAAN STANDAR OPERASIONAL PROSEDUR (SOP) PELAYANAN OLEH STAFF TICKETING DI SALES OFFICE GARUDA INDONESIA SENAYAN CITY”. Jurnal Ilmiah Manajemen dan Kewirausahaan 1, no. 2 (May 9, 2022): 243–257. Accessed July 5, 2025. https://journalcenter.org/index.php/jimak/article/view/335.