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