Citazione APA

National Center for Construction Education and Research (U.S.). (2003). Welding: Level one : annotated instructor's guide. Pearson.

Stile di citazione Chicago

National Center for Construction Education and Research (U.S.). Welding: Level One : Annotated Instructor's Guide. Upper Saddle River, NJ: Pearson, 2003.

Citazione MLA

National Center for Construction Education and Research (U.S.). Welding: Level One : Annotated Instructor's Guide. Pearson, 2003.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.