Breeden, Stanley
Collins, 1973
Buku Teks
Saville-Kent, William, 1845-1908
Cambridge University Press, 2013
Buku Teks
Marshall, Jock
Hodder and Stoughton, 1970
Buku Teks
edited by Robert Finch and John Elder
W.W. Norton, 2002
Buku Teks
Australian National Parks and Wildlife Service, 1987
Buku Teks