M. Yuniwati, D. Kuncorojati, and M. Yusuf, “The Effect of Sucrose Concentration and Reaction Temperature on the Transparency and Physical Properties of Transparent Solid Soap Based on Virgin Coconut Oil and Secang Wood Extract (Caesalpinia Sappan L.)”, etj, vol. 11, no. 01, pp. 8660–8664, Jan. 2026.