APA (7th ed.) Citation

Alcorn. (1973). Spies of the O.S.S. Robert Hale.

Chicago Style (17th ed.) Citation

Alcorn. Spies of the O.S.S. London: Robert Hale, 1973.

MLA (8th ed.) Citation

Alcorn. Spies of the O.S.S. Robert Hale, 1973.

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