May, P. (1999). Knockout first certificate: Student's book (5th ed.). Oxford: Oxford University Press.
Chicago-стиль цитированияMay, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford University Press, 1999.
MLA-цитированиеMay, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford University Press, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.