Painter, William H.
Little,Brown and Company, 1971
Buku Teks
Painter, William H.
Little,Brown and Company, 1981
Buku Teks
Pechman, Joseph A., author
Brookings Institution, 1987
Buku Teks
Pechman, Joseph A., author
Brookings Institution, 1971
Buku Teks
Hoover Institution Press, 1996
Buku Teks