Barrow, Christopher J., author
Cambridge University Press, 1991
Buku Teks
Holsti, Ole R.
Boston Allen & Unwin 1984
Buku Teks
Noll, Reinhard, author
[, Springer], 2012
eBooks
Harridi Ilman Tovid, author
2016
UI - Skripsi (Membership)
Miller, Dennis P., author
CRC Press, 2009
Buku Teks