Newhauser, Richard
Ashgate/Variorum, 2007
Buku Teks
Belliotti, Raymond A., author
Wiley-Blackwell, 2014
Buku Teks
Selekman, Benjamin M.
New York, N.Y., McGraw-Hill Book Company
Buku Teks
edited by Carl J. Friedrich
The Modern Library, 1949
Buku Teks
Vaughn, Lewis, author
Oxford University Press, 2005
Buku Teks