Hassan, J. J., and M. Hamzah. “Halangan-Halangan Pengurusan Sekolah Rendah Dalam Mewujudkan Sekolah Berkesan Di Zon Utara (Perlis, Kedah Dan Pulau Pinang): Tindakan Dan Keperluan Guru Besar Dan Guru-Guru Penolong Kanan Menanganinya: The Primary School Management Obstacles in Establishing Effective School in the Northern Zone (Perlis, Kedah and Pulau Pinang): Actions and the Needs of the Headmasters”. Jurnal Pendidikan Bitara UPSI, vol. 13, no. 2, Sept. 2020, pp. 12-28, doi:10.37134/bitara.vol13.2.2.2020.