APA (7th ed.) Citation

Clayton, W. (1920). Margarine. Longmans, Green and co..

Chicago Style (17th ed.) Citation

Clayton, William. Margarine. London, New York [etc.]: Longmans, Green and co., 1920.

MLA (9th ed.) Citation

Clayton, William. Margarine. Longmans, Green and co., 1920.