Zaidin, M.A. et al. 2021. Kualitas Tutorial Tatap Muka Mahasiswa Non Pendidikan Dasar Universitas Terbuka. Cokroaminoto Journal of Primary Education. 4, 2 (Oct. 2021), 144–154. DOI:https://doi.org/10.30605/cjpe.422021.1457.