APA ציטוט

(1987). Headway workbook: Upper-intermediate. Oxford: Oxford Univ. Press.

Trích dẫn kiểu Chicago

Headway Workbook: Upper-intermediate. Oxford: Oxford Univ. Press, 1987.

ציטוט MLA

Headway Workbook: Upper-intermediate. Oxford: Oxford Univ. Press, 1987.