Ratnawaty, Gervacia Jenny, Ratih Indrawati, Wahdaniah Wahdaniah, and Khusna Arif Rakhman. “AN OVERVIEW OF ADVANCED 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) ANALYSIS TECHNIQUES”. Walisongo Journal of Chemistry 8, no. 2 (December 17, 2025): 138–152. Accessed January 3, 2026. https://journal.walisongo.ac.id/index.php/wjc/article/view/26028.