Liz, McCaul Jo, & Soars, J. (2018). New headway: Elementary. workbook without key (Fifth edition.). Oxford University Press.
Chicago Style (17. basım) AtıfLiz, McCaul Jo, ve John Soars. New Headway: Elementary. Workbook Without Key. Fifth edition. Oxford: Oxford University Press, 2018.
MLA (9th ed.) AtıfLiz, et al. New Headway: Elementary. Workbook Without Key. Fifth edition. Oxford University Press, 2018.
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