edited by Gordon Greenwood
Angus & Robertson, 1978
Buku Teks
Halliday, Jon, author
Pantheon Books, 1975
Buku Teks
Thornton, Richard C., author
Westview Press, 1982
Buku Teks
McInnis, Edgar, author
Clarke Irwin, 1956
Buku Teks
McInnis, Edgar, author
Holt, Rinehart and Winston of Canada, 1982
Buku Teks