Phytochemical Screening, Total Flavonoid and Total Phenolic Content and Antioxidant Activity of Different Parts of Caesalpinia bonduc (L.) Roxb, Sembiring, Elin Novia, Elya Berna, and Sauriasari Rani , Pharmacognosy Journal, December 2017, Volume 10, Issue 1, p.123-127, (2018)