Rafiqul Islam, S., S. Perumal, and Z. Hussin. “Relational Norms, Happiness and Customer Satisfaction in Micro Finance Institution’s (MFI’s): A Conceptual Framework”. Journal of Advanced Research in Business and Management Studies, vol. 9, no. 1, Oct. 2020, pp. 1-9, https://akademiabaru.com/submit/index.php/arbms/article/view/1273.