Citazione Stile APA (7a Edizione)

Spaulding W. William & Wheeler G. C. George C. (1998). ASNT Level II Study Guide: Radiographic Testing Method (2nd ed.). Columbus, The American Society for Nondestructive Testing, Inc., 1998.

Citazione stile Chigago Style (17a edizione)

Spaulding W. William e Wheeler G. C. George C. ASNT Level II Study Guide: Radiographic Testing Method. 2nd ed. Columbus, The American Society for Nondestructive Testing, Inc., 1998, 1998.

Citatione MLA (9a ed.)

Spaulding W. William e Wheeler G. C. George C. ASNT Level II Study Guide: Radiographic Testing Method. 2nd ed. Columbus, The American Society for Nondestructive Testing, Inc., 1998, 1998.