Hartzler, H.Richard
Kennikat Press, 1976
Buku Teks
Lovett, Frank, author
Cambridge University Press, 2016
eBooks
Unger, Roberto Mangabeira
The Free Press, 1976
Buku Teks
Putri Yuliane, author
2017
UI - Skripsi (Membership)
Humanities Press, 1995
Buku Teks