Evaluation of Antioxidant Activity and Phytochemical Screening of Leaves, Barks, Stems and Fruits of Alphitonia philippinensis (Rhamnaceae) From Brunei Darussalam, Ahmed, Jamiuddin, Salim Kamariah Abu, Lim Linda B. L., and Jama Abdalla Mohamed , Pharmacognosy Journal, September 2019, Volume 11, Issue 5, p.951-961, (2019)