APA (7th ed.) Citation

Wirt, W., & Cruse, P. H. (1970). The letters of the British spy. University of North Carolina Press.

Chicago Style (17th ed.) Citation

Wirt, William, and Peter Hoffman Cruse. The Letters of the British Spy. Chapel Hill: University of North Carolina Press, 1970.

MLA (8th ed.) Citation

Wirt, William, and Peter Hoffman Cruse. The Letters of the British Spy. University of North Carolina Press, 1970.