APA (7th ed.) Citation

Jong, L. d., & Geyl, C. (1956). The German Fifth Column in the Second World War. Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Jong, Louis de, and C.M Geyl. The German Fifth Column in the Second World War. London: Routledge & Kegan Paul, 1956.

MLA (8th ed.) Citation

Jong, Louis de, and C.M Geyl. The German Fifth Column in the Second World War. Routledge & Kegan Paul, 1956.

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