RINAWATI, L.; HARNO, R.; HASIBUAN, P. S. N. OPTIMIZATION OF CUSTOMER LOYALTY AT COFFEE SHOPS IN SURABAYA. JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS, [S. l.], v. 2, n. 3, p. 392–403, 2023. DOI: 10.55047/jhssb.v2i3.584. Disponível em: https://ojs.transpublika.com/index.php/JHSSB/article/view/584. Acesso em: 13 mar. 2026.