Pharmacognostic and Phytochemical Standardization of White Tea Leaf (Camellia sinensis L. Kuntze) Ethanolic Extracts, Ekayanti, Meiliza, Ardiana Lia, Najib Sarah Zielda, Sauriasari Rani, and Elya Berna , Pharmacognosy Journal, February 2017, Volume 9, Issue 2, p.221-226, (2017)