RAHMADI IDRIS PASARIBU; SABDA DIAN NURANI SIAHAAN. Analisis Pengaruh Product Quality dan Service Quality Terhadap Loyalitas Konsumen Pada Warkop Rifqi Jaya Tuasan Medan Tembung. JUMBIWIRA : Jurnal Manajemen Bisnis Kewirausahaan, [S. l.], v. 4, n. 2, p. 756–779, 2025. DOI: 10.56910/jumbiwira.v4i2.2886. Disponível em: https://jurnal-stiepari.ac.id/index.php/jumbiwira/article/view/2886. Acesso em: 5 dec. 2025.