APA (7th ed.) Citation

Roskill, S. W. (1970). Hankey, man of secrets. Collins.

Chicago Style (17th ed.) Citation

Roskill, S. W. Hankey, Man of Secrets. London: Collins, 1970.

MLA (9th ed.) Citation

Roskill, S. W. Hankey, Man of Secrets. Collins, 1970.

Warning: These citations may not always be 100% accurate.