Sumpun Preuksagorn และผู้แต่งคนอื่นๆ. (1998) Effects of monensin of mammary gland function during late lactation in crossbred holstein cattle. Chulalongkorn University:ม.ป.ท.Sumpun Preuksagorn และผู้แต่งคนอื่นๆ. 1998. Effects of monensin of mammary gland function during late lactation in crossbred holstein cattle. ม.ป.ท.:Chulalongkorn University;Sumpun Preuksagorn และผู้แต่งคนอื่นๆ. Effects of monensin of mammary gland function during late lactation in crossbred holstein cattle. ม.ป.ท.:Chulalongkorn University, 1998. Print.