Cita APA (7th ed.)

Allen, W. S. (1974). Living English structure: A practice book for foreign students (5th ed.). Longman.

Cita Chicago (17th ed.)

Allen, W. Stannard. Living English Structure: A Practice Book for Foreign Students. 5th ed. London: Longman, 1974.

Cita MLA (9th ed.)

Allen, W. Stannard. Living English Structure: A Practice Book for Foreign Students. 5th ed. Longman, 1974.

Atenció: Aquestes cites poden no estar 100% correctes.