International Federation of Petroleum Workers. World Congress. (1960). Minutes of the ... World Congress. The Federation.
芝加哥风格引文International Federation of Petroleum Workers. World Congress. Minutes of the ... World Congress. [S.l.]: The Federation, 1960.
MLA引文International Federation of Petroleum Workers. World Congress. Minutes of the ... World Congress. The Federation, 1960.
警告：这些引文格式不一定是100％准确.