Soars J. John & Soars L. Liz. (1998). New Headway English Course. Upper-Intermediate: Workbook with key. Oxford, Oxford University Press, 1998.
Chicago Style (17th ed.) CitationSoars J. John and Soars L. Liz. New Headway English Course. Upper-Intermediate: Workbook with Key. Oxford, Oxford University Press, 1998, 1998.
MLA引文Soars J. John and Soars L. Liz. New Headway English Course. Upper-Intermediate: Workbook with Key. Oxford, Oxford University Press, 1998, 1998.
警告：這些引文格式不一定是100％准確.