Badria, Syarifa, Ramli Ramli, and Iwan Adinugroho. 2023. “The Influence Of Advertising And Sales Promotion On Purchasing Decisions At Gultik Stores In Balikpapan City”. Jurnal Indonesia Sosial Teknologi 4 (8):1152-61. https://doi.org/10.59141/jist.v4i8.688.