Mohamad Zain, Shaharir, and Zahrin Affandi Mohd Zahrin. “Sistem Angka Perpuluhan Yang Diketahui Tertua Di Dunia: Angka Malayonesia: The World Oldest Known Decimal Numeral System: The Malayonesian Numerals”. Journal of Science and Mathematics Letters 7 (July 29, 2019): 52–65. Accessed April 11, 2025. https://ejournal.upsi.edu.my/index.php/JSML/article/view/2685.