Elsa Meilani and Suryadi Marthadinata 2026. The Influence of Brand Ambassador and Product Quality on Consumer Purchase Interest in Lain Hati Coffee Products, Cikupa Branch, Tangerang Regency. International Journal of Economics, Business and Innovation Research. 5, 06 (Oct. 2026), 773-802. DOI:https://doi.org/10.63922/ijebir.v5i06.6368.