Nurjanah, Sarifah, et al. “The Effect of NaOH Concentration and Length of Transesterification Time on Characteristic of FAME from Reutealis Trisperma (Kemiri Sunan)”. International Journal on Advanced Science, Engineering and Information Technology, vol. 5, no. 1, Feb. 2015, pp. 52-56, doi:10.18517/ijaseit.5.1.483.