SAPITRI, S., & Damayanti, D. (2022). Analysis Of Promotion Costs To Increase Ticket Sales At PT Garuda Indonesia (Persero) Tbk Branch Office Lampung. Jurnal Kompetitif Bisnis, 1(9), 11. Retrieved from https://jkb.fisip.unila.ac.id/index.php/jkb/article/view/243