Sari, Tria, Winida Marpaung, and Diny Atrizka. “Service Quality Ditinjau Dari Kepemimpinan Transformasional Pimpinan Yayasan Terhadap Guru Pesantren”. Psyche 165 Journal 13, no. 1 (January 31, 2020): 132–139. Accessed June 3, 2026. https://jpsy165.org/ojs/index.php/jpsy165/article/view/75.