“PENGARUH PROMOSI DAN SALURAN DISTRIBUSI TERHADAP KEPUTUSAN PEMBELIAN PADA BUBUK KOPI JM PAYAKUMBUH”. JOURNAL OF SCIENCE AND SOCIAL RESEARCH 9, no. 3 (June 30, 2026): 4913–4921. Accessed August 30, 2026. https://jurnal.goretanpena.com/index.php/JSSR/article/view/6709.