Winitra Patcharamun และ Santi Tip-pyang. (2009) Chemical constituents from the roots of Shorea roxburghii G. Don. Chulalongkorn University:ม.ป.ท.Winitra Patcharamun และ Santi Tip-pyang. 2009. Chemical constituents from the roots of Shorea roxburghii G. Don. ม.ป.ท.:Chulalongkorn University;Winitra Patcharamun และ Santi Tip-pyang. Chemical constituents from the roots of Shorea roxburghii G. Don. ม.ป.ท.:Chulalongkorn University, 2009. Print.