Jessy, J. A. “The Study of Chemical and Sensory Quality of Liang Tea Pontianak Beverages Rich in Antioxidants on Various Concentrations of Sappan Wood (Caesalpinia Sappan L.)”. Jurnal Agritechno, Nov. 2023, pp. 114-23, https://agritech.unhas.ac.id/ojs/index.php/at/article/view/1018.