edited by Alexander Dallin, Gail W. Lapidus
Westerview Press, 1991
Buku Teks
edited by Alexander Dalllin, Gail W. Lapidus
Westview press, 1991
Buku Teks
Lamont, Corliss, author
Philosophical Library, 1952
Buku Teks
Fischer, George, author
Harvard University Press, 1952
Buku Teks
Hough, Jerry F.
The Brookings Institution, 1980
Buku Teks