Gavron, Daniel
Houghton Miffiln, 1984
Buku Teks
Epstein, Israel, author
New World Press, 1964
Buku Teks
Pane, Sutan Batara P., author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2010
UI - Skripsi (Open)
Irwin, 1996
Buku Referensi
Nurmalasari Soepiter, author
Universitas Indonesia, 2006
UI - Tesis (Membership)