郭扬华. (2021). 美利坚笔记: United States notes. 团结出版社.
Chicago Style (17th ed.) Citation郭扬华. 美利坚笔记: United States Notes. 团结出版社, 2021.
MLA (8th ed.) Citation郭扬华. 美利坚笔记: United States Notes. 团结出版社, 2021.
Warning: These citations may not always be 100% accurate.