Firmin, S. (1946). They came to spy. Hutchinson.
Chicago Style (17th ed.) CitationFirmin, Stanley. They Came to Spy. London, New York: Hutchinson, 1946.
MLA (9th ed.) CitationFirmin, Stanley. They Came to Spy. Hutchinson, 1946.
Warning: These citations may not always be 100% accurate.