Fahrur, A., and B. Haryanto. “The Role of School Committees and Associations in Supporting Competitive Advantage in Muhammadiyah Elementary School 2 Krian”. Journal of Islamic and Muhammadiyah Studies, Vol. 5, Aug. 2023, p. 10.21070/jims.v5i0.1583, doi:10.21070/jims.v5i0.1583.