Cita APA

Swan, M., & Walter, C. (1997). How English works: A grammar practice book. New York: Oxford University Press.

Chicago Style Citation

Swan, Michael., i Catherine Walter. How English Works: A Grammar Practice Book. New York: Oxford University Press, 1997.

Cita MLA

Swan, Michael., i Catherine Walter. How English Works: A Grammar Practice Book. New York: Oxford University Press, 1997.