Sapri, S. (2011). Uji Aktivitas Antioksidan Ekstrak Kayu Bayur Sulawesi (Pterospermum celebicum Miq.) dengan Metode Penangkapan Radikal Bebas DPPH (2,2-diphenyl-1-picryl-hydrazyl). Journal of Tropical Pharmacy and Chemistry, 1(3), 227–234. https://doi.org/10.25026/jtpc.v1i3.33