Genus Ziphius
Evans, P.G.H.; Smeenk, C.S.; Van Waerebeek, K. (2008). Genus Ziphius, in: Harris, S. et al. (Ed.) Mammals of the British Isles. pp. 690-692
In: Harris, S.; Yalden, D.W. (Ed.) (2008). Mammals of the British Isles. 4th. Mammal Society: [s.l.]. ISBN 9780906282656. 800 pp., more
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