Ahmad Zahir Mokhtar, Ahmed Ali Ahmed Alhomeidy, Nor Aida Abdul Rahman. 2020. “GAP ANALYSIS ON THE COMPETENCIES OF AIRLINE REVENUE MANAGEMENT: A PRELIMINARY STUDY”. International Journal of Advanced Science and Technology 29 (6s), 1848 -60. http://sersc.org/journals/index.php/IJAST/article/view/9347.