SIRINGORINGO, Panatar; DARYANTO, Eka; RAHMAN, Arif. The Role of School Supervisors in Improving Vocational School (SMK) Accreditation in Humbang Hasundutan. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 35, n. 3, p. 160–165, 2017. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/7985. Acesso em: 13 oct. 2025.