Hoi, T. M., D. N. Dai, and T. D. Thang. “Chemical Composition of Essential Oils of Annona Squamosa L. and Annona Reticulata L. From Vietnam”. Academia Journal of Biology, vol. 33, no. 3, May 2012, pp. 63-67, doi:10.15625/0866-7160/v33n3.766.