APA (7th ed.) Citation

Thomson, A. (1970). A practical English grammer Economics 1 to 6. O U P.

Chicago Style (17th ed.) Citation

Thomson, A. A Practical English Grammer Economics 1 to 6. London: O U P, 1970.

MLA (9th ed.) Citation

Thomson, A. A Practical English Grammer Economics 1 to 6. O U P, 1970.