Page, B., Knightley, P., & Leitch, D. (1968). Philby; the spy who betrayed a generation. Deutsch.
Chicago Style (17th ed.) CitationPage, Bruce, Phillip Knightley, and David Leitch. Philby; the Spy Who Betrayed a Generation. London: Deutsch, 1968.
MLA (8th ed.) CitationPage, Bruce, et al. Philby; the Spy Who Betrayed a Generation. Deutsch, 1968.
Warning: These citations may not always be 100% accurate.