APA (7th ed.) Citation

Cookridge, E. H. (1968). The third man: The truth about "Kim" Philby, double agent. Barker.

Chicago Style (17th ed.) Citation

Cookridge, E. H. The Third Man: The Truth About "Kim" Philby, Double Agent. London: Barker, 1968.

MLA (9th ed.) Citation

Cookridge, E. H. The Third Man: The Truth About "Kim" Philby, Double Agent. Barker, 1968.

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