Louw, Gideon N.
Physiological animal ecology
Longman Scientific and Technical, 1993
 Buku Teks
The ecology of animal movement
edited by Ian R. Swingland and Paul J. Greenwood
Clarendon Press, 1983
 Buku Teks
The ecology of animal movement
edited by Ian R. Swingland and Paul J. Greenwood
Clarendon Press, 1983
 Buku Teks
Macfadyen, A.
Animal ecology: aims and methods
Pitman, 1963
 Buku Teks
The Encyclopaedia of animal behaviour and biology
edited by Peter Slater and R. McNeill Alexander
Grolier International, 1986
 Buku Referensi