Citazione Stile APA (7a Edizione)
Alexander, L. G. (1980). Practice and Progress 2: An Integrated Course for Pre-Intermediate Students (24.Edition.). Longman Group UK.
Citazione stile Chigago Style (17a edizione)
Alexander, Louis George. Practice and Progress 2: An Integrated Course for Pre-Intermediate Students. 24.Edition. London: Longman Group UK, 1980.
Citatione MLA (9a ed.)
Alexander, Louis George. Practice and Progress 2: An Integrated Course for Pre-Intermediate Students. 24.Edition. Longman Group UK, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.