[1]
M. Ali Brohi and A. A. Shaikh, “Assessment of perceived service quality using servqual mod-el: a case study of Pakistan international airline (PIA) in-flight hospitality”,
IJBAS, vol. 8, no. 2, pp. 11–19, Oct. 2019,
doi: 10.14419/ijbas.v8i2.29714.