APA (7th ed.) Citation

Seth, R. (1965). Unmasked!: The story of Soviet espionage. Hawthorn Books.

Chicago Style (17th ed.) Citation

Seth, Ronald. Unmasked!: The Story of Soviet Espionage. Hawthorn Books, 1965.

MLA (8th ed.) Citation

Seth, Ronald. Unmasked!: The Story of Soviet Espionage. Hawthorn Books, 1965.

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