edited by Leonie Kramer
University of Queensland Press, 1988
Buku Teks SO
Morrow, Theresa
Rockport Pub., 1997
Buku Teks SO
Dupee, F.W.
Doubleday, 1956
Buku Teks SO
Swan, Michael
Longmans, 1950
Buku Teks SO
Swan, Michael
Longmans Green, 1969
Buku Teks SO