記錄引文
APA引文
Estados Unidos Department of Agriculture. (1921). Field operations of the bureau of soils. U.S.Department of Agriculture.
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Chicago Style (17th ed.) Citation
Estados Unidos Department of Agriculture. Field Operations of the Bureau of Soils. U.S.Department of Agriculture, 1921.
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MLA引文
Estados Unidos Department of Agriculture. Field Operations of the Bureau of Soils. U.S.Department of Agriculture, 1921.
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警告：這些引文格式不一定是100％准確.