Sulistyo Arty, Indyah Sulistyo Arty, and Dini Rohmawati. “Optimization of Condensation Reaction Time Between Vanillin and P-Nitroacetophenone in Acid Catalysts”. Jurnal Sains Dasar, vol. 3, no. 1, Jan. 2015, doi:10.21831/jsd.v3i1.2783.