APA (7th ed.) Citation

Smith, B. T. K. (1938). Idiomatic english of the present day. J.M. Dent & Sons Ltd.

Chicago Style (17th ed.) Citation

Smith, B. T. Knight. Idiomatic English of the Present Day. London: J.M. Dent & Sons Ltd, 1938.

MLA (8th ed.) Citation

Smith, B. T. Knight. Idiomatic English of the Present Day. J.M. Dent & Sons Ltd, 1938.