Citazione Stile APA (7a Edizione)

Alexander, L. G. (1976). Developing skills: An integrated course for intermediate students. Longman.

Citazione stile Chigago Style (17a edizione)

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. Londres: Longman, 1976.

Citatione MLA (9a ed.)

Alexander, Louis George. Developing Skills: An Integrated Course for Intermediate Students. Longman, 1976.