edited by John Cottingham
Blackwell, 2008
Buku Teks
Washington : Heldref Publication
Majalah, Jurnal, Buletin
Kenny, Anthony
Blackwell Publishing, 2007
Buku Teks
University of Malaya Library, 1997
Buku Teks
edited by Donald Davidson (and others)
Springer Netherland, 1969
Buku Teks