Natalia, Swanti (2010) Aktivitas Peredam Radikal Bebas Daun Kubis Ungu (Brassica oleracea var. capitata forma rubra) Pengering Bekuan (Freeze-Drying) dan Sinar Matahari Langsung terhadap 1,1-diphenyl-2-picrylhdrazyl (DPPH). [Undergraduate thesis]