Citazione APA

Alexander, L. G. (1973). Practice and progress: An integrated course for pre-intermediate students. London: Longman.

Stile di citazione Chicago

Alexander, L. G. Practice and Progress: An Integrated Course for Pre-intermediate Students. London: Longman, 1973.

Citazione MLA

Alexander, L. G. Practice and Progress: An Integrated Course for Pre-intermediate Students. London: Longman, 1973.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.