Mohsin Raza, Salniza Bt Md. Salleh, and Hasnizam Shaari. “Factors Influencing Brand Loyalty of Customers in Aviation Sector of Pakistan”. Journal of Policy Research, vol. 5, no. 2, Sept. 2019, pp. 8-14, https://jprpk.com/index.php/jpr/article/view/5.