Brady, Robert A.
University of California Press, 1950
Buku Teks
Brady, Robert A.
Columbia University Press , 1943
Buku Teks
Brady, Robert N.
Reston Publishing Company, 1982
Buku Teks
Plaskitt, Harold, author
University Tujorial Press, 1950
Buku Teks
Ulima Umavashti, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2018
UI - Tugas Akhir