SURYANTO, Adi; GAFUR, Abdul; SUDARSONO, FX. MODEL EVALUASI PROGRAM TUTORIAL TATAP MUKA UNIVERSITAS TERBUKA. Jurnal Penelitian dan Evaluasi Pendidikan, [S. l.], v. 17, n. 2, p. 198–214, 2013. DOI: 10.21831/pep.v17i2.1695. Disponível em: https://journal.uny.ac.id/index.php/jpep/article/view/1695. Acesso em: 7 may. 2025.