SIBURIAN, Tiur Asi; SIMATUPANG, Nurhayati; CHAIRUNISA, Hera. Model Development of Principal Performanc Through Empirical Study on Junior High School in Medan Indonesia. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 31, n. 1, p. 248–259, 2017. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/6490. Acesso em: 9 feb. 2026.