ebrary, Inc. (2005). International travel and health: Situation as on 1 January 2005. World Health Organization.
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Chicago Style (17th ed.) Citation
ebrary, Inc. International Travel and Health: Situation as on 1 January 2005. Geneva: World Health Organization, 2005.
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MLA引文
ebrary, Inc. International Travel and Health: Situation as on 1 January 2005. World Health Organization, 2005.
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警告：這些引文格式不一定是100％准確.