Stubbs, Peter
AIDA Research Centre Pub., 1980
Buku Teks
Clark, Peter
Routledge , 1994
Buku Teks
Brash, Donald T.
Australian National University , 1966
Buku Teks
edited by Alex Hunter
Melbourne University Press, 1965
Buku Teks
Basset, G. W.
Australian Council for Education Research, 1965
Buku Teks