Spiegel, S. L. (1995). World politics in a new era. Harcourt Brace College Publishers.
芝加哥风格引文Spiegel, Steven L. World Politics in a New Era. Fort Worth: Harcourt Brace College Publishers, 1995.
MLA引文Spiegel, Steven L. World Politics in a New Era. Harcourt Brace College Publishers, 1995.
警告：这些引文格式不一定是100％准确.