Zanal-Abidin, M. I. D. ., M. A. . Azhar, A. N. . Abd Ghafar, H. . Manap, and M. A. S. . Mohd-Aspar. “Identification on Purity of Tualang and Kelulut Honey Through Measurement of PH and Electrical Conductivity”. Journal of Advanced Research Design, vol. 135, no. 1, Dec. 2025, pp. 253-6, https://akademiabaru.com/submit/index.php/ard/article/view/6318.