Hetherington, Norman, 1921-2010
Australian Council for the Arts, 1974
Buku Teks
Norman, Jerry, author
Cambridge University Press, 2013
Buku Teks
Fairclough, Norman, author
Hodder Education, 1995
Buku Teks
Llyod, Douglas
American Elsevier , 1963
Buku Teks
Fisher, Douglas
Ill. Irwin, 1971
Buku Teks