Citazione Stile APA (7a Edizione)

McKenna J. Joe. (2012). English Result. Upper-intermediate: Workbook. Oxford, Oxford University Press, 2012.

Citazione stile Chigago Style (17a edizione)

McKenna J. Joe. English Result. Upper-intermediate: Workbook. Oxford, Oxford University Press, 2012, 2012.

Citatione MLA (9a ed.)

McKenna J. Joe. English Result. Upper-intermediate: Workbook. Oxford, Oxford University Press, 2012, 2012.