Muhammad Nurkholis Kholik, M. Yunus Abu Bakar and Ali Mas’ud (2025) “Guru Sekumpul’s Character Education Thoughts: An Analytical Study of the Concept of Morality and the Formation of Insan Kamil”, Hayula: Indonesian Journal of Multidisciplinary Islamic Studies, 9(2), pp. 235–258. doi: 10.21009/hayula.009.02.05.