Cita APA (7th ed.)

Thomson, A. (1962). A practical english grammar exercises-3 Vol 3. O.U.P.

Cita Chicago (17th ed.)

Thomson, A. A Practical English Grammar Exercises-3 Vol 3. London: O.U.P, 1962.

Cita MLA (9th ed.)

Thomson, A. A Practical English Grammar Exercises-3 Vol 3. O.U.P, 1962.