Prayitno, T. A., Widyorini, R., & Lukmandaru, G. (2020). Chemical variation of five natural extracts by non-polar solvent. Maderas. Ciencia Y Tecnología, 23, 1–12. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/4321 (Original work published January 1, 2021)