APA (7th ed.) Citation

Roche, T. (1969). The key in the lock: A history of immigration control in England from 1066 to the present day. John Murray.

Chicago Style (17th ed.) Citation

Roche, T.W.E. The Key in the Lock: A History of Immigration Control in England from 1066 to the Present Day. London: John Murray, 1969.

MLA (8th ed.) Citation

Roche, T.W.E. The Key in the Lock: A History of Immigration Control in England from 1066 to the Present Day. John Murray, 1969.