Achmad Qodim Syafaatullah, Yeni Variyana, Ni’matur Rohmah, Iid Mufaidah, and Ayu Qurota A’yun. “Optimization of Ultrasound-Assisted Extraction Parameters from Indigofera Tinctoria L Using Response Surface Methodology”. Journal of Research and Technology 7, no. 2 (December 30, 2021): 175–186. Accessed April 12, 2025. https://journal.unusida.ac.id/index.php/jrt/article/view/450.