Gaya APA
Walker, L., Blount, S. (1991).
Letterhead & Logo Designs: Creating the Corporate Image (1).
United States of America:
Rockport.
Gaya MLA
Walker, Lisa., Blount, Steve.
"Letterhead & Logo Designs: Creating the Corporate Image".
1
United States of America:
Rockport,
1991.
Desain Grafis.