Rudolph, Lloyd I., author
Oxford University Press, 2008
Buku Teks
Rudolph, Lloyd I., author
Oxford University Press, 2008
Buku Teks
Sage Publications, 2005
Buku Teks
Page, David, editor
Oxford University Press, 1982
Buku Teks
Palmer, Norman D.
Houghton Mifflin, 1961
Buku Teks