APA (7th ed.) Citation

Halecki, O., & Murray, J. F. (1954). Pius XII. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Halecki, Oskar, and James F. Murray. Pius XII. London: Weidenfeld and Nicolson, 1954.

MLA (9th ed.) Citation

Halecki, Oskar, and James F. Murray. Pius XII. Weidenfeld and Nicolson, 1954.