Muraya J, VanLeeuwen J A, Gitau G K, Wichtel J J, Makau D N, Crane M B, McKenna S L B and Tsuma V T 2018:  
Cross-sectional study of productive and reproductive traits of dairy cattle in smallholder farms in Meru, Kenya. 
 Livestock Research for Rural Development. Volume 30, Article #171. 
 Retrieved 
, from http://www.lrrd.org/lrrd30/10/jmura30171.html