Citazione Stile APA (7a Edizione)

Murphy, R. (1994). Intermediate English grammar: Reference and practice (2nd ed.). U. Pr.

Citazione stile Chigago Style (17a edizione)

Murphy, Raymond. Intermediate English Grammar: Reference and Practice. 2nd ed. Cambridge: U. Pr, 1994.

Citatione MLA (9a ed.)

Murphy, Raymond. Intermediate English Grammar: Reference and Practice. 2nd ed. U. Pr, 1994.