APA (7th ed.) Citation

Campbell, G. A. (1955). The civil service in Britain. Penguin Books.

Chicago Style (17th ed.) Citation

Campbell, George Archibald. The Civil Service in Britain. Harmondsworth, Middlesex: Penguin Books, 1955.

MLA (9th ed.) Citation

Campbell, George Archibald. The Civil Service in Britain. Penguin Books, 1955.