Siagian, A. H., B. A. Kodiyat MS, and A. Andryan. “The Development of Muhammadiyah Ideology Dar Al-Ahdi Wa Al-Shahadah in Pancasila Course, Law Study Program, Faculty of Law, Universitas Muhammadiyah Sumatera Utara”. Randwick International of Social Science Journal, Vol. 2, no. 4, Oct. 2021, pp. 516-23, doi:10.47175/rissj.v2i4.332.