Gaya APA
Walker, J, R.
(1991).
Exploring Drafting : fundamentals of technology
(
-)
.
America:
The Goodheart - Willcox.
Gaya MLA
Walker, John, R.
"Exploring Drafting : fundamentals of technology".
-
America:
The Goodheart - Willcox,
1991.
Text.