edited by Peter France and Kenneth Haynes
Oxford University Press, 2006
Buku Referensi
Gillespie, Stuart
Wiley, 2011
Buku Teks
Runge, Laura L.
Cambridge University Press, 1997
eBooks
Oxford University Press, 1991
Buku Referensi
Murray, David
Routledge/Thoemmes Press, 1996
Buku Referensi