Varatasya, Aulia, Lara Wulandari, and Erlinda N. Yunus. “Factors Influencing Service Quality and Product Quality: A Case Study of a Water Filter Company (PT XYZ)”. Business Review and Case Studies 6, no. 2 (August 28, 2025): 292. Accessed December 24, 2025. https://journal.ipb.ac.id/brcs/article/view/61564.