Khuan, H., Rahmiyati , N., Mendrofa, K. J., Santi Diwyarthi, N. D. M., & Mas Wiartha, N. G. (2024). Analysis of Consumer Perceptions of Product Quality, Sales Promotion, and Ease of Purchase in Increasing Purchasing Decisions at Start-up Companies in Indonesia. West Science Interdisciplinary Studies, 2(01), 264–271. https://doi.org/10.58812/wsis.v2i01.614