Trích dẫn APA

Gairns, R. (2011). Natural English: Pre- Intermediate Student's book. Anh: Oxford University.

Trích dẫn kiểu Chicago

Gairns, Ruth. Natural English: Pre- Intermediate Student's Book. Anh: Oxford University, 2011.

MLA Trích dẫn

Gairns, Ruth. Natural English: Pre- Intermediate Student's Book. Anh: Oxford University, 2011.

Warning: These citations may not always be 100% accurate.