Drought in the United States causes significant.
Chicago Edition CitationDrought in the United States Causes Significant.
MLA引文Drought in the United States Causes Significant.
警告：這些引文格式不一定是100％准確.
APA引文
Drought in the United States causes significant.
Chicago Edition CitationDrought in the United States Causes Significant.
MLA引文Drought in the United States Causes Significant.