Rachman, Indana Saramita, et al. “Strategi Peningkatan Brand Loyalty Dan Customer Satisfaction Bisnis Yogurt Di Indonesia (Studi Kasus: PT Yummy Food Utama)”. Jurnal Aplikasi Bisnis Dan Manajemen, vol. 3, no. 2, May 2017, p. 324, https://doi.org/10.17358/jabm.3.2.324.