Beal, Tim, author
Pluto Press, 2005
Buku Teks
Beal, Tim, author
London : pluto press, 2005
Buku Teks
Taylor, George E.
New York Institute of Pasific Relations 1940
Buku Teks
Council for Research in Values and Philosophy, 2008.
Buku Teks
Beal, Gillian.
Charles E. Tuttle, 2002
Buku Teks