Jurnal Polisi Indonesia, 4 (2003) Mei : 58-73, 2003
Artikel Jurnal
Heilbroner, Robert L., author
Harper & Row , 1963
Buku Teks
Wilber, Charles K.
McGraw-Hill , 1992
Buku Teks
North-Holland, 1972
Buku Teks
Hess, Peter
Harcourt Brace & Company, 1997
Buku Teks