R Dewi Pertiwi, Dewi Yolanda Putri, Wanda Laksniyunita. “Build Customer Brand Loyalty from Customer Engagement and Social Media Marketing”. CEMJP, vol. 30, no. 4, Sept. 2022, pp. 157-64, http://journals.kozminski.cem-j.org/index.php/pl_cemj/article/view/12.