Pope, Alexander, 1688-1744.E
The Clarendon press, 1933
Buku Teks
Wals, Chad, author
Prentice-Hall, 1962
Buku Teks
O`Connor, Mark, author
Megalong Book, 1988
Buku Teks
DiYanni, Robert
McGraw-Hill, 2000
Buku Teks
Hutchinson, G.O., author
Clarendon Press, 1990
Buku Referensi