APA (7th ed.) Citation

Tack, A. (1968). The spy who wasn't exchanged. Long.

Chicago Style (17th ed.) Citation

Tack, Alfred. The Spy Who Wasn't Exchanged. London: Long, 1968.

MLA (8th ed.) Citation

Tack, Alfred. The Spy Who Wasn't Exchanged. Long, 1968.

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