Feinberg, Joel, author
Oxford University Press , 1984
Buku Teks
Diening, J. A. A.
Gouda Quint BV., 1982
Buku Teks
Packer, Herbert L., author
Stanford University Press, 1968
Buku Teks
lafave, Wayne R.
Thomson Reuters, 2010
Buku Teks
Jefferson, Michael
Pitman, 1992
Buku Teks