Gaya APA
Walker, J, R., Polanin, W, R.
(2010).
Arc Welding
(
8)
.
United States of America:
The Goodheart-Willcox.
Gaya MLA
Walker, John, R.., Polanin, W., Richard.
"Arc Welding".
8
United States of America:
The Goodheart-Willcox,
2010.
Text.