Harlow, Ralph Volney, author
Holt, Rinehart and Winston,Inc, 1964
Buku Teks
Schwartz, Bernard, author
McGraw-Hill, 1974
Buku Teks
Wattenberg, Ben J
Doubleday, 1974
Buku Teks
Council for Public Interest Law, 1976
Buku Teks
Caldwell, Mark, author
Picador USA, 1999
Buku Teks