Cita APA (7a ed.)
Alexander, L. G. (1990). Practice and Progress: An integrated course for pre-intermediate students. Longman Group UK.
Cita Chicago Style (17a ed.)
Alexander, Louis George. Practice and Progress: An Integrated Course for Pre-intermediate Students. Essex: Longman Group UK, 1990.
Cita MLA (9a ed.)
Alexander, Louis George. Practice and Progress: An Integrated Course for Pre-intermediate Students. Longman Group UK, 1990.
Precaución: Estas citas no son 100% exactas.