Cockrill, W. R. (1977). The water buffalo(PDF). Rome: Animal Production and Health Series No. 4. Food and Agriculture Organization of the United Nations. Архивирано из оригинала(PDF) 16. 6. 2013. г. Приступљено 8. 7. 2014.
Cockrill, W. R. (1977). The water buffalo(PDF). Rome: Animal Production and Health Series No. 4. Food and Agriculture Organization of the United Nations. Архивирано из оригинала(PDF) 16. 6. 2013. г. Приступљено 8. 7. 2014.