Abdullah, F., & Sina, I. (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. Retrieved from http://mjs.um.edu.my/index.php/MJS/article/view/8507