Citazione Stile APA (7a Edizione)
Alexander, L. G. (1978). Practice and Progress. An Integrated Course for pre-intermediate students (22. Edition.). Lonman.
Citazione stile Chigago Style (17a edizione)
Alexander, Louis George. Practice and Progress. An Integrated Course for Pre-intermediate Students. 22. Edition. London: Lonman, 1978.
Citatione MLA (9a ed.)
Alexander, Louis George. Practice and Progress. An Integrated Course for Pre-intermediate Students. 22. Edition. Lonman, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.