APA引文

(2003). Our country's regions. New York: Macmillan/McGraw-Hill.

Trích dẫn kiểu Chicago

Our Country's Regions. New York: Macmillan/McGraw-Hill, 2003.

MLA引文

Our Country's Regions. New York: Macmillan/McGraw-Hill, 2003.

警告：這些引文格式不一定是100％准確.