Dr. Mohd. Imran Siddiquei, Mr. Shashank kathpal, Mrs. Rekha Bawa. “Statistical Analysis in Service Quality: A Review”. International Journal of Advanced Science and Technology, Vol. 29, no. 10s, June 2020, pp. 4729-48, http://sersc.org/journals/index.php/IJAST/article/view/22038.