Lane, Richard J, author
Routledge, 2006
Buku Teks
Tallis, Raymond
Macmillan, 1995
Buku Teks
Castle, Gregory, author
Blackwell, 2007
Buku Teks
Bertens, Hans, author
Taylor & Francis Group, 2008
Buku Teks
Selden, Raman, author
The University Press of Kentucky , 1993
Buku Teks