Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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