Cruz, T. Non-destructive testing and inspection. Philippine Engineering Journal.
Cita Chicago (17th ed.)Cruz, Tagumpay. "Non-destructive Testing and Inspection." Philippine Engineering Journal .
Cita MLA (9th ed.)Cruz, Tagumpay. "Non-destructive Testing and Inspection." Philippine Engineering Journal, .
Atenció: Aquestes cites poden no estar 100% correctes.