Russell, Bertrand, 1872-1970
Routledge, 1998
Buku Teks
Harper & Row Publishers, 1959
Buku Teks
Katheleen Norris
Houghton Mifflin, 2001
Buku Teks
edited by Elizabeth Hardwick
Ticknor and Fields, 1986
Buku Teks
Holt, Rinehart and Winston, 1969
Buku Teks