Trích dẫn APA

An investigation into refusal strategies to request by American speakers of English and Vietnamese learners of English.

Trích dẫn kiểu Chicago

An Investigation Into Refusal Strategies to Request By American Speakers of English and Vietnamese Learners of English.

Trích dẫn MLA

An Investigation Into Refusal Strategies to Request By American Speakers of English and Vietnamese Learners of English.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.