Cita APA (7a ed.)

Thomson, A. (1961). A Practical English Grammar Exercises-1 Vol I. O.U.P.

Cita Chicago Style (17a ed.)

Thomson, A. A Practical English Grammar Exercises-1 Vol I. London: O.U.P, 1961.

Cita MLA (9a ed.)

Thomson, A. A Practical English Grammar Exercises-1 Vol I. O.U.P, 1961.