Wahyuningsih, S., S. Vikasari, and A. Kusmayadi. “Exploring the Alpha-Amylase Inhibitory Potential of Roselle Calyx Extracts (Hibiscus Sabdariffa L) in N-Hexane and Ethyl Acetate Fractions”. Jurnal Kartika Kimia, Vol. 8, no. 1, June 2025, pp. 85-91, doi:10.26874/jkk.v8i1.899.