The Spy who Saved the World: How a Soviet Colonel Changed the Course of the Cold War by Jerrold L. Schecter and Peter S. Deriabin (Scribners, 1992, 1st edition, printing line ends at 1)

The Billion Dollar Spy by David E. Hoffman  (Doubleday, 2015 - 9th printing)

Khrushchev's Cold War: The Inside Story of an American Adversary by Aleksandr Fursenko & Timothy Naftali