edited by David Scott Kastan
Blacwell, 1999
Buku Teks
Fischer-Cripps, Anthony C., author
CRC Press, 2012
Buku Teks
edited by Matthias Steup, Ernest Sosa, Jonathan Dancy
Wiley-Blackwel, 2010
Buku Teks
Acland, Henry W., author
Routledge/Thoemmes Press, 1996
Buku Referensi
chosen by John Gross
Oxford University Press, 1983
Buku Referensi