United States. Department of State. (1948). Economic cooperation series. [s.n.].
芝加哥风格引文United States. Department of State. Economic Cooperation Series. Washington: [s.n.], 1948.
MLA引文United States. Department of State. Economic Cooperation Series. [s.n.], 1948.
警告：这些引文格式不一定是100％准确.