D. S. Mills, Jeremy N. Marchant-Forde. Urine drinking // The Encyclopedia of Applied Animal Behaviour and Welfare. — CABI, 2010. — P. 626. — ISBN 9780851997247.
D. S. Mills, Jeremy N. Marchant-Forde. Urine drinking // The Encyclopedia of Applied Animal Behaviour and Welfare. — CABI, 2010. — P. 626. — ISBN 9780851997247.