Buck, Philip W.
The governments of foreign powers
Henry Holt, 1950
Buku Teks
Joad, C.E.M.
Introduction to modern political theory
Clarendon Press, 1959
Buku Teks
Grimes, Alan P.
Modern political ideologies
Oxford University Press , 1959
Buku Teks
Grimes, Alan P.
Modern political ideologies
Oxford University Press , 1959
Buku Teks
Ball, Alan R.
Modern politics and government
Macmillan, 1974
Buku Teks