Siregar, H. M., D. Dadang, D. Sartiami, I. W. Winasa, S. Efendi, and G. Indriati. “Compatibility of Piper Retrofractum and Annona Squamosa Extract Mixture Against Spodoptera Frugiperda (Lepidoptera: Noctuidae)”. Jurnal Hama Dan Penyakit Tumbuhan Tropika, vol. 26, no. 1, Feb. 2026, pp. 226-3, doi:10.23960/jhptt.126226-236.