Beram, S., M. Awang, R. Ismail, and N. Noor. “Application of the Fuzzy Delphi Method to Organisational Leadership Competencies for Educational Middle Leaders: Aplikasi Fuzzy Delphi Method Terhadap Kompetensi Kepimpinan Organisasi Bagi Pemimpin Pertengahan Pendidikan”. Management Research Journal, vol. 10, Oct. 2021, pp. 82-93, doi:10.37134/mrj.vol10.sp.7.2021.