Abdullah, Fauziah, and Ibnu Sina. 2003. “The Potential of Soursop Seed Extract Annona Muricata Linn As a Biopesticide Against Aphids Aphis Gossypii Glover (Homoptera: Aphididae) on Chilly”. Malaysian Journal of Science 22 (2):11-16. https://samudera.um.edu.my/index.php/MJS/article/view/8507.