APA (7th ed.) Citation

Seth. (1965). Forty years of Soviet spying. Cassell.

Chicago Style (17th ed.) Citation

Seth. Forty Years of Soviet Spying. London: Cassell, 1965.

MLA (8th ed.) Citation

Seth. Forty Years of Soviet Spying. Cassell, 1965.

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