Siew Siew, Goh, Anna Christina Abdullah, and Melissa Ng Lee Yen Abdullah. 2013. “KESAN AKTIVITI BRAIN GYM TERHADAP PERKEMBANGAN KOGNITIF KANAK-KANAK PRASEKOLAH: EFFECT OF BRAIN GYM ACTIVITIES TOWARDS COGNITIVE DEVELOPMENT OF KINDERGARTEN’S CHILDREN”. Jurnal Pendidikan Awal Kanak-Kanak Kebangsaan 2 (December):21-41. https://ojs.upsi.edu.my/index.php/JPAK/article/view/757.