Smith, John Malcolm
Public affairs Press, 1960
Buku Teks
Corwin, Edward S., author
New York University Press, 1957
Buku Teks
Milton, Geroge Fort
Little, Brown and Company, 1944
Buku Teks
George Brasiller, 1960
Buku Teks
Gerhardt, Michael J.
Oxford Univesity Press, 2014
Buku Teks