Donaldson, Thomas, author
McGraw-Hill, 1986
Buku Teks
Lippmann, Walter, author
The New AMerican Library, 1955
Buku Teks
Hutcheson, Francis, author
Cambridge University Press, 2014
eBooks
Vaughn, Lewis, author
Oxford , 2006
Buku Teks
Posner, Richard A.
Harvard University Press, 1999
Buku Teks