KADIR OTHMAN, Abdul; A RAHMAN, Mohd Khirzanbadzli; ABD, Nur Najjah. Customer Engagement Index (CEI): The Assessment of Customers’ Willingness to Act as Companies’ Ambassadors. International Journal of Academic Research in Progressive Education and Development, [S. l.], v. 11, n. 3, 2022. Disponível em: https://ijarped.com/index.php/journal/article/view/1729. Acesso em: 1 aug. 2025.