Cita APA

Allen, W. S., & Allen, W. S. (1959). Living English structure: A practice book for foreign students (4. edition --.). London, Sydney: Longmans.

Citación estilo Chicago

Allen, William Stannard, y William Stannard Allen. Living English Structure: A Practice Book for Foreign Students. 4. edition --. London, Sydney: Longmans, 1959.

Cita MLA

Allen, William Stannard, y William Stannard Allen. Living English Structure: A Practice Book for Foreign Students. 4. edition --. London, Sydney: Longmans, 1959.