KURNIAWAN, G.; ATINAJA, M. The Effect of Innovative Product, Brand Image, and Opinion Leader on Customer Retention in the Covid-19 Pandemic Era. JPBM (Jurnal Pendidikan Bisnis dan Manajemen), [S. l.], v. 10, n. 3, p. 329–344, 2024. DOI: 10.17977/um003v10i22024p329. Disponível em: https://journal-fe.um.ac.id/index.php/jpbm/article/view/660. Acesso em: 4 jun. 2026.