Widuta, Lara, and Muammar Rinaldi. “The Effectiveness of E-WOM (Electronic Word Of Mouth) and Instagram Social Media Promotion on Purchase Intention at Liang Teh Sumatera”. PROCEEDING INTERNATIONAL BUSINESS AND ECONOMICS CONFERENCE (IBEC) 2, no. 1 (December 6, 2023): 92–101. Accessed September 11, 2025. https://conference.eka-prasetya.ac.id/index.php/IBEC/article/view/86.