Thu Hong N T, Ngoc Trang N T, Khang D N and Preston T R 2018: Supplementing water spinach (Ipomoea aquatica) with foliage of Mimosa pigra or Leucaena leucocephala and coconut oil; effects on N retention and enteric methane emissions in growing goats. Livestock Research for Rural Development. Volume 30, Article #207. Retrieved , from http://www.lrrd.org/lrrd30/12/hong30207.html