University of Queensland, 1968
Buku Teks
Hughes, Colin A.
Australian National University Press, 1968
Buku Teks
Crisp, L. F. (Leslie Finlay), author
Longman Chesire, 1965
Buku Teks
Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1973
Buku Teks
Huges, Colin Anfield
Oxford University Press, 1976
Buku Teks