Kassim AH, Deris CZ. Tahap Pemahaman Konsep Jadual Berkala dan Struktur Atom serta Aplikasinya dalam Kalangan Pelajar Sekolah Menengah di Daerah Gua Musang, Kelantan: The Understanding Level of Periodic Table and Atomic Structure Concepts and its Application among the Secondary School Students of Gua Musang District, Kelantan. JSML [Internet]. 2012 Jun. 19 [cited 2024 Apr. 29];4(1):43-52. Available from: https://ejournal.upsi.edu.my/index.php/JSML/article/view/468