^
abcMason, Ian Lauder: A world dictionary of livestock breeds, types and varieties. 4th edition. CAD International, Wallingford 1996,
ISBN0-85199-102-5, p. 32
^
abcMason, Ian Lauder: A world dictionary of livestock breeds, types and varieties. 4th edition. CAD International, Wallingford 1996,
ISBN0-85199-102-5, p. 32