Nungnuch Saipin และผู้แต่งคนอื่นๆ. (2006) Effects of betaine supplementation on mammary function and body in late lactating crossbred saanen goats. Chulalongkorn University:ม.ป.ท.Nungnuch Saipin และผู้แต่งคนอื่นๆ. 2006. Effects of betaine supplementation on mammary function and body in late lactating crossbred saanen goats. ม.ป.ท.:Chulalongkorn University;Nungnuch Saipin และผู้แต่งคนอื่นๆ. Effects of betaine supplementation on mammary function and body in late lactating crossbred saanen goats. ม.ป.ท.:Chulalongkorn University, 2006. Print.