Ping, L., 		Ameer Hamza, I., 		Abdullah, R., 		Yasin, M., 		Sooria, S., & 		Bee, L.
2020 Dec 17.  The Effectiveness Of Lesson Study On Differentiated Instruction Among Mathematics Head Panels In District Of Port Dickson. Postulat :  Jurnal Inovasi Pendidikan Matematika. [Online] 1:2