Irada Sinta, Rico Nur Ilham, Muhammad Multazam, Rista Sihombing and Suci Puji Suryani 2023. THE EFFECT OF COUNTRY OF ORIGIN AND CELEBRITY ENDORSEMENT ON PURCHASE DECISIONS VIVO SMARTPHONE PRODUCTS (Case Study on Cellular Global Customers in Tebing Tinggi City). International Conference on Health Science, Green Economics, Educational Review and Technology. 5, 1 (Jun. 2023), 298–304. DOI:https://doi.org/10.54443/ihert.v5i1.225.