Anchor Books, 2000
Buku Teks
edited by Maynard Mack
Prentice-Hall, 1953
Buku Teks
Freeborn, Dennis
Macmillan, 1992
Buku Teks
Holt, Rinehart and Winston, 1976
Buku Teks
Mayhew, Rev. A. L., author
The Clarendon Press, [date of publication not identified]
Buku Referensi