APA (7th ed.) Citation

Brett, S. R. (1959). A history of the British Empire and Commonwealth (New.ed.). Nelson.

Chicago Style (17th ed.) Citation

Brett, Sidney R. A History of the British Empire and Commonwealth. New.ed. London: Nelson, 1959.

MLA (9th ed.) Citation

Brett, Sidney R. A History of the British Empire and Commonwealth. New.ed. Nelson, 1959.