International Federation of Petroleum and Chemical Workers. World Congress. (1963). Proceedings of the ... World Congress, International Federation of Petroleum Workers. The Federation.
Cita Chicago (17th ed.)International Federation of Petroleum and Chemical Workers. World Congress. Proceedings of the ... World Congress, International Federation of Petroleum Workers. [S.l.]: The Federation, 1963.
Cita MLA (8th ed.)International Federation of Petroleum and Chemical Workers. World Congress. Proceedings of the ... World Congress, International Federation of Petroleum Workers. The Federation, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.