National Convention of Manufacturers and Producers. (1953). Official proceedings. 1st- (1st-.). [s.n.].
Cita Chicago (17th ed.)National Convention of Manufacturers and Producers. Official Proceedings. 1st-. 1st-. Manila: [s.n.], 1953.
Cita MLA (9th ed.)National Convention of Manufacturers and Producers. Official Proceedings. 1st-. 1st-. [s.n.], 1953.
Atenció: Aquestes cites poden no estar 100% correctes.