Lê Hoàng YM, Nguyen DHN, Le TGH, Ha DHT, Nguyen TH. PROCESS OF MAKING PILLS WITH ANTIOXIDANT ACTIVITY FROM RUBY GUAVA LEAF EXTRACT. TCKH ĐHSP TPHCM TPHCM. 2025;22(12):2154-2166. doi:10.54607/hcmue.js.22.12.4838(2025)