AGUSTINI, Tyas; WAHAB, Abdi. Aplikasi Penghubung Guru dan Orang Tua: e-Counseling: Studi Kasus SMP Negeri 89 Jakarta. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, [S. l.], v. 11, n. 2, p. 97–106, 2020. DOI: 10.31937/si.v11i2.1739. Disponível em: https://ejournals.umn.ac.id/index.php/SI/article/view/1739. Acesso em: 4 aug. 2025.