Garland Publishing, Inc, 1982
Buku Teks
Anthony, Robert Newton, 1916-2006
Richard D. Irwin, 1979
Buku Teks
Cerepak, John R.
Prentice-Hall, 1987
Buku Teks
Niswonger, Clifford Rollin, 1907-
South-Western Pub., Co. , 1977
Buku Teks
Stevenson, Russell A.
Alexander Hamilton Institute, 1962
Buku Teks