SITI HANNAH SABTU; MOHD EFFENDI @ EWAN MOHD MATORE; SITI MISTIMA MAAT. Content Validity Of Teacher Teaching Quality Measurement Using The Six Sigma Approach Based On The Fuzzy Delphi Method. Educational Administration: Theory and Practice, [S. l.], v. 30, n. 5, p. 9788–9798, 2024. DOI: 10.53555/kuey.v30i5.4656. Disponível em: https://kuey.net/index.php/kuey/article/view/4656. Acesso em: 1 jul. 2024.