(2009). The world almanac and book of facts, 2009. World Almanac Books.
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Chicago Style (17th ed.) Citation
The World Almanac and Book of Facts, 2009. New York: World Almanac Books, 2009.
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MLA引文
The World Almanac and Book of Facts, 2009. World Almanac Books, 2009.
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警告：這些引文格式不一定是100％准確.