Jienardy C. GAP ANALISIS PERSEPSI DAN EKSPEKTASI KONSUMEN TERHADAP KUALITAS LAYANAN, HARGA, KUALITAS PRODUK ESUS. PERFORMA [Internet]. 2017 Jul. 31 [cited 2026 Feb. 19];1(6):703-10. Available from: https://ojs.somebut.my.id/index.php/performa/article/view/398