E. Lie and D. E. M. Manik, “Analysis of Financial Technology and Green Marketing On Brand Loyalty (Study Case on Starbucks Multatuli Medan Branch): Analisis Pengaruh Teknologi Finansial dan Pemasaran Hijau terhadap Loyalitas Merek (Studi Kasus Starbucks Cabang Multatuli Medan)”, IBEC, vol. 4, no. 1, pp. 546–556, Dec. 2025.