Singer, Peter
Animal liberation: the Definitive classic of the animal movement
2009
 Buku Teks SO
The ecology of animal movement
edited by Ian R. Swingland and Paul J. Greenwood
Clarendon Press, 1983
 Buku Teks SO
Orwell, George, 1903-1950
Animal farm
Sumbu, 2001
 Buku Teks
Vernberg, F. John
The animal and the environment
Holt Rinehart and Winston, 1970
 Buku Teks
McFarland, David
Animal behaviour
 Buku Teks