Gadis Arivia, Donny Gahral Adian.
Department of Philosophy, University of Indonesia, 2009
Buku Teks
Tran, Van Doan, author
The council for research in values and philosophy, 2001
Buku Teks
Landon, Kenneth Perry
The University of Chicago Press, 1947
Buku Teks
Gomperz, Heinrich, author
Christopher Pub. House, 1953
Buku Teks
edited by Chibueze C. Udeani ... [et al.]
Council for Research in Values and Philosophy,, 2006
Buku Teks