APA (7th ed.) Citation

Hamilton, F. S. (1943). The days before yesterday ([27th ed.].). Hodder and Stoughton.

Chicago Style (17th ed.) Citation

Hamilton, Frederick Spencer. The Days Before Yesterday. [27th ed.]. London: Hodder and Stoughton, 1943.

MLA (8th ed.) Citation

Hamilton, Frederick Spencer. The Days Before Yesterday. [27th ed.]. Hodder and Stoughton, 1943.