APA (7th ed.) Citation

Lockhart, R. B. (1967). Ace of spies. Hodder & Stoughton.

Chicago Style (17th ed.) Citation

Lockhart, Robin Bruce. Ace of Spies. London: Hodder & Stoughton, 1967.

MLA (9th ed.) Citation

Lockhart, Robin Bruce. Ace of Spies. Hodder & Stoughton, 1967.

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