Sahak, S. Z., A. W. Mohd Yusof, E. Y. Mudri, and S. Saidin. “The Effect of Retail Mix on Passengers’ Motivation to Shop at Airport Terminal Outlets”. Journal of International Business, Economics and Entrepreneurship, vol. 3, no. 1, June 2018, p. 30, doi:10.24191/jibe.v3i1.14438.