Belina Rosellini
Universitas Indonesia, 2013
UI - Skripsi (Membership)
Chalmers, A.F.
University of Green Sland Press, 1982
Buku Teks
Antonio Cassese, editor
Oxford university press, 2012
Buku Teks
More, Thomas
David Campbell Publishers, 1992
Buku Referensi
Somit, Albert
Dryden Press, 1974
Buku Teks