Hutriansyah Harahap, Mhd. Shafwan Koto, Rifka Hadia Lubis. PENGARUH RELATIONSHIP MARKETING DAN PROMOSI TERHADAP CUSTOMER LOYALITY JASA TRANSPORTASI PADA TRAVEL CV. FLORES SIBOLGA. JIS [Internet]. 2023 Jun. 2 [cited 2026 Jul. 25];1(2):137-4. Available from: https://jurnal.alimspublishing.co.id/index.php/jis/article/view/387