Citazione Stile APA (7a Edizione)
Alexander, L. G. (1990). Practice and Progress: An integrated course for pre-intermediate students. Longman Group UK.
Citazione stile Chigago Style (17a edizione)
Alexander, Louis George. Practice and Progress: An Integrated Course for Pre-intermediate Students. Essex: Longman Group UK, 1990.
Citatione MLA (9a ed.)
Alexander, Louis George. Practice and Progress: An Integrated Course for Pre-intermediate Students. Longman Group UK, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.