Style de citation APA (7e éd.)
Walton, R., & O'Connell, S. (1994). Focus on Advanced English. Grammar Practice. Thomas Nelson and Sons.
Style de citation Chicago (17e éd.)
Walton, Richard, et Sue O'Connell. Focus on Advanced English. Grammar Practice. London: Thomas Nelson and Sons, 1994.
Style de citation MLA (9e éd.)
Walton, Richard, et Sue O'Connell. Focus on Advanced English. Grammar Practice. Thomas Nelson and Sons, 1994.
Attention : ces citations peuvent ne pas être correctes à 100%.