Singh, Bilveer, 1956-, author
Gadjah Mada University Press , 1994
Buku Teks
Kennan, George F., 1904-, author
Pantheon Books, 1983
Buku Teks
Saivetz, Carol R.
Westview Press, 1985
Buku Teks
Pergamon Press, 1980
Buku Teks
Singh, Bilveer, 1956-, author
Gadjah Mada University Press , 1994
Buku Teks