APA ציטוט

Soars, J., & Soars, L. (1987). Headway upper - intermediate: Workbook. New York: Oxford University Press.

Trích dẫn kiểu Chicago

Soars, John, và Liz Soars. Headway Upper - Intermediate: Workbook. New York: Oxford University Press, 1987.

ציטוט MLA

Soars, John, và Liz Soars. Headway Upper - Intermediate: Workbook. New York: Oxford University Press, 1987.