記錄引文
APA引文
(2007). The world almanac and book of facts 2007. World Almanac Education Group.
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Chicago Style (17th ed.) Citation
The World Almanac and Book of Facts 2007. New York: World Almanac Education Group, 2007.
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MLA引文
The World Almanac and Book of Facts 2007. World Almanac Education Group, 2007.
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警告：這些引文格式不一定是100％准確.