Zebua, Niriwu, Nov Elhan Gea, Eliagus Telaumbanua, and Nanny Artatina Buulolo. “Analisis Tingkat Brand Loyalty Dalam Upaya Customer Retention Rokok Sampoerna A Mild Di Kota Gunungsitoli”. EKOMA : Jurnal Ekonomi, Manajemen, Akuntansi 3, no. 5 (July 13, 2024): 1039–1044. Accessed October 10, 2025. https://www.ulilalbabinstitute.id/index.php/EKOMA/article/view/4294.