Hasibuan, H. A., and A. Priyanto. “Physicochemical Properties of Oil Mixtures from Virgin Red Palm Oil With Olive Oil, Corn Oil, Soybean Oil or Sunflower Oil”. Jurnal Penelitian Kelapa Sawit, Vol. 29, no. 1, Apr. 2021, pp. 21-34, doi:10.22302/iopri.jur.jpks.v29i1.115.