Wilson, Kate
Elsevier , 2005
Buku Teks
Wilson, Kate
Bailliere Tindall, 1997
Buku Teks
Wilson, Kate
Bailliere Tindal , 2005
Buku Teks
McMahon, Linnet
Routledge, 1992
Buku Referensi
edited by Charles E. Schaefer and Kevin J. O'Connor
John Wiley & Sons, 1982
Buku Referensi