APA引文

Walker, E., & Elsworth, S. (1994). Grammar Practice for Elementary Srudents. London: Longman.

Trích dẫn kiểu Chicago

Walker, Elaine, và Steve Elsworth. Grammar Practice for Elementary Srudents. London: Longman, 1994.

MLA引文

Walker, Elaine, và Steve Elsworth. Grammar Practice for Elementary Srudents. London: Longman, 1994.

警告：这些引文格式不一定是100％准确.