National Shipyards and Steel Corporation & National Shipyards and Steel Corporation. [Report. [s.n.].
Chicago Style (17. basım) AtıfNational Shipyards and Steel Corporation ve National Shipyards and Steel Corporation. [Report. Manila: [s.n.].
MLA (9th ed.) AtıfNational Shipyards and Steel Corporation ve National Shipyards and Steel Corporation. [Report. [s.n.].
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..