Artikel Jurnal
edited by G. Alexander and O.B. Williams
Sydney University Press, 1973
Buku Teks
Clark, John R., author
Lewis Publishers, 1996
Buku Referensi
Beatley, Timothy, author
University California Press, 2003
Buku Teks
Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1977
Buku Teks