APA (7th ed.) Citation

Bruce Page, D. L. a. P. K. ;. i. b. J. l. C., Leitch, D., & Knightley, P. (1977). Philby: The spy who betrayed a generation. Sphere Books.

Chicago Style (17th ed.) Citation

Bruce Page, David Leitch and Phillip Knightley ; introduction by John le Carré., Davis Leitch, and Phillip Knightley. Philby: The Spy Who Betrayed a Generation. Sphere Books, 1977.

MLA (8th ed.) Citation

Bruce Page, David Leitch and Phillip Knightley ; introduction by John le Carré., et al. Philby: The Spy Who Betrayed a Generation. Sphere Books, 1977.