Graveson, R.H.
Sweet & Maxwell, 1974
Buku Teks
Larsen, Paul B., author
Martinus Nijhoff pub., 2012
Buku Teks
Mehren, Arthur Taylor von, author
Little, Brown, 1965
Buku Teks
Riny Octriyani, author
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2010
UI - Tesis (Open)
Ewers, John C.
Smithsonian Institution, 1957
Buku Teks