Sabela, N. and Aminah, S. 2026. Determinants of Purchasing Decisions for Kopi Janji Jiwa in Sidoarjo: The Role of Digital Marketing and e-WOM. Golden Ratio of Marketing and Applied Psychology of Business. 6, 2 (Jun. 2026), 652–665. DOI:https://doi.org/10.52970/grmapb.v6i2.2278.