El-Masry, A. M. “HOSPITALITY INQUIRIES: USING ISHIKAWA DIAGRAM FOR ROOT CAUSE ANALYSIS OF NEPOTISM PERCEPTIONS”. Klover Journal of Tourism and Hospitality Management, vol. 10, no. 4, Dec. 2023, pp. 1-17, https://kloverjournals.org/index.php/thm/article/view/538.