2021. The Survey on the Implementation of Online Tutoring Information Services at SMP PGRI 1 Buduran Sidoarjo. Buana Pendidikan: Jurnal Fakultas Keguruan dan Ilmu Pendidikan Unipa Surabaya. 17, 2 (Aug. 2021), 138–144. DOI:https://doi.org/10.36456/bp.vol17.no2.a3972.