Fromm, Erich
Fear of freedom
Routledge Classics, 2001
 Buku Teks SO
Info Freedom
Jakarta : Freedom Institute, 2006,
 Majalah, Jurnal, Buletin
The future of freedom
Indian Committee for Cultural Freedom, 1999
 Buku Teks SO
Sen, Amartya, 1933-
Development as freedom
Anchor Books, 1999
 Buku Teks
Steinby, Torsten
In Quest of freedom
Government, 1971
 Buku Teks SO