Citazione APA

Swan, M., & Michael Swan; Catherine Walter. (1997). How English works: A grammar practice book, with answers. Oxford: Oxford University Press.

Stile di citazione Chicago

Swan, Michael, e Michael Swan; Catherine Walter. How English Works: A Grammar Practice Book, With Answers. Oxford: Oxford University Press, 1997.

Citazione MLA

Swan, Michael, e Michael Swan; Catherine Walter. How English Works: A Grammar Practice Book, With Answers. Oxford: Oxford University Press, 1997.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.