Dick, Archie L.
Unisa Press, 2002
Buku Teks
Russell, Bertrand, 1872-1970, author
National Book League, 1947
Buku Teks
Preiss, Julian, author
Routledge, 2013
Buku Teks
Cambridge University Press , 2008
Buku Teks
edited by Daniel M. Hausman ... [and others]
Cambridge University Press, 1994
Buku Teks