Black Book Marketing Group
Black Book Marketing Group, 1995
Buku Teks
Bland, David, author
Faber and Faber LimIted, 1969
Buku Teks
[T.t.] [t.p.] 1995
Buku Referensi
editor, Brian J. Rusbridge
Municipal Journal Limited, 1995
Buku Referensi
Infomedia, 2012
Buku Referensi