Sukma, N.W. et al. 2021. Pengembangan Bahan Ajar Tematik Terpadu Berbasis Model Problem Based Learning di Sekolah Dasar. Jurnal Basicedu. 5, 4 (Aug. 2021), 2664–2677. DOI:https://doi.org/10.31004/basicedu.v5i4.1303.