Graff, Gerald
W. W. Norton, 1992
Buku Teks
Wiggins, Sam P.
McCutchan Publishing Corporation, 1966
Buku Teks
DeVane, William Clyde, author
Harvard University Press, 1965
Buku Teks
John Wiley & Sons, 1995
Buku Teks
Allen, Herman R.
University of Illinois Press, 1964
Buku Teks