LAIYA, Satrio P.; KALANGI, Johny A. F.; MUKUAN, Danny D. S. The Effect of Service Quality and Product Quality on Customer Satisfaction at Billy Coffee House in the Mega Mas Area of Manado. Productivity, [S. l.], v. 4, n. 5, p. 564–578, 2023. DOI: 10.35797/ejp.v4i5.49990. Disponível em: https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/49990. Acesso em: 21 mar. 2026.