Gaya APA
The complete ideal's guides: direct marketing. (2006).
Jakarta:
Prenada.
Gaya Chicago
The complete ideal's guides: direct marketing.
ke-1.
Jakarta:
Prenada,
2006.
Buku.
Gaya MLA
The complete ideal's guides: direct marketing.
ke-1.
Jakarta:
Prenada,
2006.
Buku.
Gaya Turabian
The complete ideal's guides: direct marketing.
Jakarta:
Prenada,
2006.
Buku.