Graham, Gordon
Routledge , 1997
Buku Teks
edited by Berys Gaut, Dominic Mclver Lopes
Routledge, 2005
Buku Teks
Santayana, George, author
Collier Books, 1961
Buku Teks
Sim, Stuart
Harvester Wheatsheaf, 1992
Buku Teks
Spitteler, Carl
Artemis-Verlag, 1947
Buku Teks