Gea, P., Y. Zalukhu, K. Zai, and Y. Mendrofa. “The Role Of Digital Promotion In Increasing Customer Loyalty At PT Liquid Kencana Abadi, Gunungsitoli City”. Jurnal Fokus Manajemen, Vol. 5, no. 4, Oct. 2025, pp. 683-96, doi:10.37676/jfm.v5i4.9428.