Chandra, K., R. R. Manullang, dan Zamhari. “ANALISIS PENGARUH KANAL PROMOSI MEDIA SOSIAL INSTAGRAM TERHADAP OMZET KEDAI CANDU COFFEE PANGKALPINANG”. JURNAL PROGRESIF MANAJEMEN BISNIS, vol. 10, no. 2, November 2023, hlm. 152-8, https://e-jurnal.stie-ibek.ac.id/index.php/JIPMB/article/view/289.