Citazione Stile APA (7a Edizione)

Alexander, L. G. (1980). Mainline: A functional, notional approach. Progress A Student's Book. Longman Group Ltd.

Citazione stile Chigago Style (17a edizione)

Alexander, L. G. Mainline: A Functional, Notional Approach. Progress A Student's Book. London: Longman Group Ltd, 1980.

Citatione MLA (9a ed.)

Alexander, L. G. Mainline: A Functional, Notional Approach. Progress A Student's Book. Longman Group Ltd, 1980.