“KUALITAS PELAYANAN PRODUK HERBALIFE DI CLUB SYALALA GEMBIRA NUTRITION”. Jurnal MoZaiK 15, no. 2 (Agustus 13, 2024): 21–31. Diakses April 21, 2026. https://ijc.ilearning.co/index.php/mozaik/article/view/2308.