Linh N T, Dong N T K and Thu N V 2018:  
Effects of different lysine and energy levels in diets on the performance and carcass traits of growing local Muscovy ducks. 
 Livestock Research for Rural Development. Volume 30, Article #7. 
 Retrieved 
, from http://www.lrrd.org/lrrd30/1/ntkd30007.html