Sjukun, Sjukun, and Yudi Yulius. “The Influence of Electronic Word of Mouth and Social Media Marketing on Brand Image and Purchase Intention of E-Commerce Cosmetic Products in Medan City”. International Journal of Social Science, Education, Communication and Economics (SINOMICS Journal) 2, no. 4 (August 23, 2023): 879–892. Accessed September 26, 2025. https://sinomicsjournal.com/index.php/sj/article/view/190.