Reese, Trevor R.
F.W. Cheshire, 1964
Buku Teks
Crawford, R. M.
Hutchinson's University Library, 1955
Buku Teks
Crawford, R.M., author
Hutchinson University Library, 1952.
Buku Teks
Cut Amalia Revianty, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2018
UI - Skripsi Membership
Castles, Francis G.
Allen & Unwin, 1985
Buku Teks