Luyen L T, Anh N N, Hue K T  and Preston T R 2010 Study on using White flowers (Spilanthes camellia Murr) as the feed supplement for dairy goats.  International Conference on Livestock, Climate Change and Resource Depletion (Editor: Reg Preston),  Champasack University, Pakse, LAO PDR, 9-11 November 2010.  httm://www.mekarn.org/workshops/pakse/html/luyen.htm