MAKKON, N.; NAK-AI, N. A Study of the Relationship between Leadership of School Administrators in the 21st Century and Effectiveness in Sufficiency School Administration under the Phitsanulok Primary Educational Service Area Office 3: ฺ. Ratchaphruek Journal, ์์Nakhon Ratchasima, Thailand, v. 21, n. 2, p. 190–205, 2023. DOI: 10.14456/rpjnrru.2023.28. Disponível em: https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/263808. Acesso em: 16 sep. 2026.