APA (7th ed.) Citation

BOAR & BLUNDELL. (1984). The world's greatest spies and spymasters. Octopus Books.

Chicago Style (17th ed.) Citation

BOAR and BLUNDELL. The World's Greatest Spies and Spymasters. London: Octopus Books, 1984.

MLA (8th ed.) Citation

BOAR and BLUNDELL. The World's Greatest Spies and Spymasters. Octopus Books, 1984.

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