Nizam, N., N. Mansor, and S. Supaat. “Analyzing Customer Satisfaction: Consumer Behavior towards the Selection of Beauty Products in Klang Valley”. International Journal of Human and Technology Interaction (IJHaTI), vol. 3, no. 2 October, Oct. 2019, pp. 55-60, https://ijhati.utem.edu.my/ijhati/article/view/5493.