Cita APA (7th ed.)

National Center for Construction Education and Research (U.S.). (2003). Welding: Level two : AWS entry level welder--phase two. Prentice Hall.

Cita Chicago (17th ed.)

National Center for Construction Education and Research (U.S.). Welding: Level Two : AWS Entry Level Welder--phase Two. Upper Saddle River, NJ: Prentice Hall, 2003.

Cita MLA (8th ed.)

National Center for Construction Education and Research (U.S.). Welding: Level Two : AWS Entry Level Welder--phase Two. Prentice Hall, 2003.