Gaya APA
Forsyth, Patrick. (1992).
The selling edge .
London:
Piatkus.
Gaya Chicago
Forsyth, Patrick.
The selling edge.
London:
Piatkus,
1992.
Buku.
Gaya MLA
Forsyth, Patrick.
The selling edge.
London:
Piatkus,
1992.
Buku.
Gaya Turabian
Forsyth, Patrick.
The selling edge.
London:
Piatkus,
1992.
Buku.