Citazione Stile APA (7a Edizione)

Hutchinson, T., & Ward, A. (1997). Life lines pre-intermediate: Teacher's book.

Citazione stile Chigago Style (17a edizione)

Hutchinson, Tom, e Ann Ward. Life Lines Pre-intermediate: Teacher's Book. Oxford, 1997.

Citatione MLA (9a ed.)

Hutchinson, Tom, e Ann Ward. Life Lines Pre-intermediate: Teacher's Book. 1997.