Eskani, I., and I. M. Utamaningrat. “Natural Preservation of Woods Using Sambiloto (Andrographis Paniculata) Leaf Extract for Making Wooden Batik Crafts”. Jurnal Kartika Kimia, Vol. 2, no. 2, Nov. 2019, pp. 63-66, doi:10.26874/jkk.v2i2.35.