Fitriyani, Fera, and Nurul Huda. “The Influence of Brand Ambassador and Fanaticism on Purchase Decision of Indomilk X Seventeen With Brand Image As a Variable”. Golden Ratio of Marketing and Applied Psychology of Business, vol. 7, no. 1, Aug. 2026, pp. 68-83, doi:10.52970/grmapb.v7i1.2377.