Council for Research in Values and Philosophy, 2006
Buku Teks
Thanh-Luong, author
Foreign Language Publishing Haouse, 1955
Buku Teks
Pike, Douglas, 1908-1974, author
MIT Press, 1968
Buku Teks
Buttinger, Joseph
Frederick A. Praeger, 1968
Buku Teks
Liberation, 1964
Buku Teks