C. T. Pangestu, S. Andriyono, and E. Saputra, “Effect of Rosella (Hibiscus Sabdariffa l.) Addition on Antioxidant Activity and Acceptability of Pedada (Sonneratia Caseolaris) Slice Jam”, Grouper, vol. 16, no. 1, pp. 95–104, Apr. 2025.