Cita APA (7a ed.)

Thomson, A. (1966). A practical english grammar exercises-4 Vol 4. O.U.P.

Cita Chicago Style (17a ed.)

Thomson, A. A Practical English Grammar Exercises-4 Vol 4. London: O.U.P, 1966.

Cita MLA (9a ed.)

Thomson, A. A Practical English Grammar Exercises-4 Vol 4. O.U.P, 1966.