edited by Adolf Sturmthal
University of Illinois Press, 1966
Buku Teks
Simanjuntak, Gloria Naulina, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Arpornsuwan, Thanet, author
Friedrich-Ebert Stiftung , 1978
Buku Teks
Sutcliffe, J.T., author
Macmillan, 1967
Buku Teks
Rees, Albert, author
University of Chicago Press, 1962
Buku Teks