Oxenden, C. (2010). American English file: Workbook starter with answer key. Oxford: Oxford University Press.
Chicago-стиль цитированияOxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.
MLA-цитированиеOxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.