Omontese B O, Rekwot P I, Ate I U and Rwuaan J S 2014:  
Ascorbic acid enhances conception rates of Red Sokoto goats following progestin (FGA-30®, FGA-45® and CIDR®) treatment during the rainy season. 
 Livestock Research for Rural Development. Volume 26, Article #130. 
 Retrieved 
, from http://www.lrrd.org/lrrd26/7/omon26130.htm