Robson, L.L.
Cambridge University Press, 1976
Buku Teks
Clark, C.M.H. (Charles Manning Hope), 1915-1991
Melbourne University Press, 1975
Buku Teks
Prentis, Malcolm D.
Sydney University Press, 1983
Buku Teks
Artikel Jurnal
Clark, C.M.H. (Charles Manning Hope), 1915-1991
Melbourne University Press, 1981
Buku Teks