Habermas, Jurgen, author
Polity Press, 1968
Buku Teks
Reynolds, Paul Davidson, author
Prentice-Hall, 1982
Buku Teks
Mackenzie,
Penguin Books, 1969
Buku Teks
Reading, Hugo F., author
Routledge & Kegan Paul, 1978
Buku Teks
Institute of Social Science, University of Tokyo,
Majalah, Jurnal, Buletin