Cita APA (7a ed.)
Alexander, L. G. (1974). Practice and Progress: A integrated course for pre -intermediate students (1. vyd.). Longman Group UK.
Cita Chicago Style (17a ed.)
Alexander, Louis George. Practice and Progress: A Integrated Course for Pre -intermediate Students. 1. vyd. London: Longman Group UK, 1974.
Cita MLA (9a ed.)
Alexander, Louis George. Practice and Progress: A Integrated Course for Pre -intermediate Students. 1. vyd. Longman Group UK, 1974.
Precaución: Estas citas no son 100% exactas.