Gaya APA
WIFFEN, Valerie. (1998).
Sketching : planning and drawing .
New York:
Sterling Publishing.
Gaya Chicago
WIFFEN, Valerie.
Sketching : planning and drawing.
New York:
Sterling Publishing,
1998.
.
Gaya MLA
WIFFEN, Valerie.
Sketching : planning and drawing.
New York:
Sterling Publishing,
1998.
.
Gaya Turabian
WIFFEN, Valerie.
Sketching : planning and drawing.
New York:
Sterling Publishing,
1998.
.