Nagele, A. D., and D. E. Awuor. “Relationship Between Transformational Leadership Style and Operational Performance of Hospitality Industry in Kenya: A Case Study of Star Rated Hotels in Nairobi County”. Journal of Human Resource & Leadership, vol. 2, no. 4, Sept. 2018, pp. 37-58, https://stratfordjournal.org/journals/index.php/journal-of-human-resource/article/view/186.