APA引文

Elaine Walker. (1998). Grammar practice for upper intermediate students. Harlow, Eng: Pearson.

Trích dẫn kiểu Chicago

Elaine Walker. Grammar Practice for Upper Intermediate Students. Harlow, Eng: Pearson, 1998.

MLA引文

Elaine Walker. Grammar Practice for Upper Intermediate Students. Harlow, Eng: Pearson, 1998.

警告：这些引文格式不一定是100％准确.