edited by Stuart Gillespie and David Hopkins
Oxford University Press, 2005
Buku Referensi
Gillespie, Stuart
Wiley, 2011
Buku Teks
Oxford University Press, 1991
Buku Referensi
Peter Pierce, Rosemary Hunter, editor
Oxford Univeristy Press, 1987
Buku Referensi
edited by Lesley Brown
Clarendon Press, 1993
Buku Referensi