Austin, James C.
Twayne , [1964]
Buku Teks
Matz, Aaron
Cambridge University Press, 2011
eBooks
Nuria Widyasari
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2002
UI - Tesis Membership
Mychael, Arthur
McGraw-Hill, 1977
Buku Teks
Solzhenitsyn, Aleksandr I.
Dell Publishing, 1968
Buku Teks