A F Fraser & D M Broom. (1990). Farm animal behaviour and welfare (3.). CABI.
Chicago Edition CitationA F Fraser i D M Broom. Farm Animal Behaviour and Welfare. 3. CABI, 1990.
Cita MLAA F Fraser i D M Broom. Farm Animal Behaviour and Welfare. 3. CABI, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.