Barzin, R., Shukor, S. R. A. dan Ahmad, A. L. (2007) “An Overview of Difficulties in Controlling Intensified Process”, 7(1), hlm. 8-15. Tersedia pada: https://jurnal.ugm.ac.id/v3/AJChE/article/view/7671 (Diakses: 8Juni2025).