Gaya APA
Iryadi, .
(2006).
Proposal Usaha PT. Spongblack Powerpens
.
Bandung:
SMAT KRIDA NUSANTARA.
Gaya MLA
Iryadi, .
"Proposal Usaha PT. Spongblack Powerpens".
Bandung:
SMAT KRIDA NUSANTARA,
2006.
Book.