Fatimah, Siti, et al. “Ekstraksi Dan Uji Aktivitas Antioksidan Ekstrak Etanol Batang Bintangur (calophyllum Soulattri)”. Journal of Biopesticides and Agriculture Technology, vol. 1, no. 2, Aug. 2024, pp. 71-82, doi:10.61511/jbiogritech.v1i2.2024.1184.