Bidayati, Utik, et al. „The Impact of Muhammadiyah’ Leadership Style and Total Quality Management on Competitive Advantage in Universities – Case on Universities in Yogyakarta, Indonesia”. Revista de Cercetare si Interventie Sociala, vol. 81, iunie 2023, pp. 62-84, https://doi.org/10.33788/rcis.81.4.