A. H. Kassim and T. C. Theng, “Kefahaman dan Aplikasi Konsep Asid-Bes dalam Kehidupan Harian dalam Kalangan Pelajar Tingkatan Empat Sains Johor Bahru: Understanding and Application of Acid-Base Concepts in The Daily Lives of Form Four Students in Johor Bahru”, JSML, vol. 1, no. 1, pp. 22–29, Jun. 2009.