Gaya APA

Jeffus, L., Bower, L. (2010). Welding: Skills, Processes and Practices for Entry-Level Welders Book 2 . United States of America: Delmar Cengage Learning.

Gaya MLA

Jeffus, Larry., Bower, Lawrence. "Welding: Skills, Processes and Practices for Entry-Level Welders Book 2". United States of America: Delmar Cengage Learning, 2010. Text.