Council for Public Interest Law, 1976
Buku Teks
Kulick, Andreas, author
Cambridge University Press , 2012
Buku Teks
Herring, E. Pendleton, author
McGraw-Hill, 1936
Buku Teks
Wirtz, W. Willard, author
Harper & Row, 1964
Buku Teks
Schultze, Charles L., author
The Brookings Institution, 1977
Buku Teks