APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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