Muthuku, Mwongeli, et al. “Relationship Between Transformational Leadership and Church Health: A Survey of Selected Denominational Churches in Nairobi City County, Kenya”. ESI Preprints (European Scientific Journal, ESJ), vol. 13, Jan. 2023, p. 374, https://esipreprints.org/index.php/esipreprints/article/view/270.