记录引文
APA引文
Maps.com (Firm) & ebrary, Inc. (2002). South Dakota. Maps.com.
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芝加哥风格引文
Maps.com (Firm) 与 Inc ebrary. South Dakota. [S.l.]: Maps.com, 2002.
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MLA引文
Maps.com (Firm) 与 Inc ebrary. South Dakota. Maps.com, 2002.
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警告：这些引文格式不一定是100％准确.