Denholm, David
Penguin Books, 1979
Buku Teks
F.W. Cheshire, 1962
Buku Teks
Nauze, J.A. La
Melborne University Press,, 1972.
Buku Teks
Graeme Davison, J.W. McCarty, Ailsa McLeary, editor
Fairfax, Syme & Weldon Associates, 1987
Buku Referensi
edited by D.J. Mulvaney and J. Peter White
Fairfax, Syme & Weldon Associates, 1987
Buku Referensi