Esplago, T. A. ., S. . Inhaynes, and C. S. . San Pedro. “Service Quality Assessment of Cebu Pacific: The DLSU-D BS Tourism Management Experience”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 58, no. 1, May 2021, pp. 147-62, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12583.