King, Kenneth
Longmann Group, 1991
Buku Teks
edited by Frances Stewart, Ruhi Saith, Barbara Harriss-White
Palgrave Macmillan, 2007
Buku Teks
Grosvenor Press, 1986
Buku Teks
Kamrava, Mehran
Routledge , 2000
Buku Teks
Miro, Carmen A.
Frances Pinter Publ., 1980
Buku Teks