APA (7th ed.) Citation

Screen, J. E. O. (1970). Mannerheim: The years of preparation (1. publ.). Hurst.

Chicago Style (17th ed.) Citation

Screen, John E. O. Mannerheim: The Years of Preparation. 1. publ. London: Hurst, 1970.

MLA (9th ed.) Citation

Screen, John E. O. Mannerheim: The Years of Preparation. 1. publ. Hurst, 1970.