Nika Frenti Damanik, Dicky Aprianto, and Hedwigis Dian Permatasari, “Meningkatkan Hasil Belajar PAK dengan Model Problem Based Learning Fase B Kelas 4 SDN 101990 Bangun Purba”, SEMNASPA, vol. 5, no. 2, pp. 1557–1576, Oct. 2024.