APA引文

Peterson, P. W. (1999). Changing perspectives - A review of the english tense system. U.S.: United States Information Agency.

Trích dẫn kiểu Chicago

Peterson, Patricia Wilcox. Changing Perspectives - A Review of the English Tense System. U.S.: United States Information Agency, 1999.

MLA引文

Peterson, Patricia Wilcox. Changing Perspectives - A Review of the English Tense System. U.S.: United States Information Agency, 1999.

警告：这些引文格式不一定是100％准确.