Yusof, Hamidah, and Rahman Ahmad. “ANALISIS KEPENTINGAN-KEJAYAAN PENGURUSAN KOKURIKULUM: Importance-Performance Analysis of Co-Curriculum Management”.
Management Research Journal, vol. 1, Mar. 2019, pp. 75-85,
https://ejournal.upsi.edu.my/index.php/MRJ/article/view/1323.