Citazione Stile APA (7a Edizione)

Hutchinson, T. (1987). English for specific purposes: a learning centred: Approach. U. Pr.

Citazione stile Chigago Style (17a edizione)

Hutchinson, Tom. English for Specific Purposes: A Learning Centred: Approach. Cambridge: U. Pr, 1987.

Citatione MLA (9a ed.)

Hutchinson, Tom. English for Specific Purposes: A Learning Centred: Approach. U. Pr, 1987.