Azizan, Mohd Fikri, Mohd Effendi @Ewan Mohd Matore, and Siti Mistima Maat. 2025. “Instrumen Pengukuran Kualiti Pengajaran Guru Berasaskan Six Sigma: Penentuan Kesahan Kandungan Melalui Analisis Fuzzy Delphi : Teacher Teaching Quality Measurement Instrument Based on Six Sigma: Establishing Content Validity through Fuzzy Delphi Analysis”. Sains Insani 10 (2):83-98. https://doi.org/10.33102/sainsinsani.vol10no2.822.