Citazione Stile APA (7a Edizione)

O'Connell, S. (1996). Focus on advanced english: CAE (3.ed.). Longman.

Citazione stile Chigago Style (17a edizione)

O'Connell, Sue. Focus on Advanced English: CAE. 3.ed. New York, EUA: Longman, 1996.

Citatione MLA (9a ed.)

O'Connell, Sue. Focus on Advanced English: CAE. 3.ed. Longman, 1996.