Prasetio, Vasco Mario, and Pesta Gultom. 2025. “The Influence of Influencer Marketing and Product Differentiation on Skincare Purchasing Decisions on Instagram Among Generation Z in Medan City: Pengaruh Influencer Marketing Dan Diferensiasi Produk Terhadap Keputusan Pembelian Skincare Di Instagram Pada Kalangan Generasi Z Di Kota Medan”. PROCEEDING INTERNATIONAL BUSINESS AND ECONOMICS CONFERENCE (IBEC) 4 (1):403-13. https://doi.org/10.47663/ibec.v4i1.314.