W. N. H. M. Sani, R. P. Jaya, B. Bunyamin, Z. H. Al-Saffar, and Y. Arbi, “Waste motor engine oil – the influence in warm mix asphalt”, JPTK, vol. 6, no. 4, pp. 248–255, Nov. 2023, doi: 10.24036/jptk.v6i4.34623.