Swan, M. (2009). How english works: A grammar practice book with answers. Oxford: Oxford University Press.
Chicago-стиль цитированияSwan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.
MLA-цитированиеSwan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.