Geddes, Margaret
Viking, 1996
Buku Teks
Malouf, David, 1934-, author
Pantheon Books, 1994
Buku Teks
Bernica Narayanan, author
BN & Associates, 2003
Buku Referensi
Geddes, Patrick
Williams & Norgate, 1949
Buku Teks
Narayanan, Bernice
BN & Associates Sdn Bhd for BN Integrated Sdn Bhd, 2003
Buku Referensi