Eden, Anthony, author
Houghton Mifflin, 1960
Buku Teks
Rowell, S.F., author
Melbourne University Press, 1974
Buku Teks
Holt, Rinehart and Winston, 1985
Buku Teks
Montgomery, B., author
The Word Publishing Comp, [date of publication not identified]
Buku Teks
Kennan, George F., 1904-, author
Little, Brown, 1967
Buku Teks