Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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