Situmorang, E. M. B., A. Alfifto, E. D. S. Tarigan, I. Putra, and A. M. U. Nasution. “The Influence of Brand Ambassador and Brand Image on Skintific Skincare Purchase Decisions in Gen Z Management Study Program, University of Sumatera Utara”. Proceeding of International Conference Technology, Economics, and Social Science, vol. 1, no. 1, Jan. 2026, pp. 213-9, https://journals.adaresearch.or.id/ictess/article/view/162.