Trinh, T.P.T. , Pham, T.V. , Cao, H.T. , Nguyen, T.-T. , Nghiem, T.T. and Tran, T. 2019. The Profile of Professional Standards for Secondary School Principals in Vietnam. International Journal of Education and Practice. 7, 4 (Sep. 2019), 310–323. DOI:https://doi.org/10.18488/journal.61.2019.74.310.323.