Fonteh F A, Niba A T, Kudi A C, Tchoumboue J and Awah-Ndukum J 2005: Influence of weaning age on the growth performance and survival of weaned guinea pigs. Livestock Research for Rural Development. Volume 17, Article #133. Retrieved
, from http://www.lrrd.org/lrrd17/12/font17133.htm