Παραπομπή APA

Swan, M. (2009). How english works: A grammar practice book with answers. Oxford: Oxford University Press.

Παραπομπή Chicago Style

Swan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.

Παραπομπή MLA

Swan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.