Purba, Purnama Yanti, Cerrly Riawin, Rini Wijaya, Wenti Suryani, and William Andreas. 2020. “The Influence of Product Quality, Price, and Personal Selling on Purchasing Decisions of Loyal Brands at PT Kawi Agung Kencana: The Influence of Product Quality, Price, and Personal Selling on Purchasing Decisions of Loyal Brands at PT Kawi Agung Kencana”. Jurnal Mantik 4 (2):1217-21. https://doi.org/10.35335/mantik.Vol4.2020.888.pp1217-1221.