記錄引文
APA引文
Estados Unidos Department of Agriculture Forest Service. (1948). Forest regions of the United States. U.S. Department of Agricultura.
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Chicago Style (17th ed.) Citation
Estados Unidos Department of Agriculture Forest Service. Forest Regions of the United States. U.S. Department of Agricultura, 1948.
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MLA引文
Estados Unidos Department of Agriculture Forest Service. Forest Regions of the United States. U.S. Department of Agricultura, 1948.
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警告：這些引文格式不一定是100％准確.