APA (7th ed.) Citation

Bolitho, H. (1951). A century of British monarchy. Longmans, Green.

Chicago Style (17th ed.) Citation

Bolitho, Hector. A Century of British Monarchy. [London, New York: Longmans, Green, 1951.

MLA (8th ed.) Citation

Bolitho, Hector. A Century of British Monarchy. Longmans, Green, 1951.