APA (7th ed.) Citation

Wolff, J. (1939). Papst Pius XI. Franke.

Chicago Style (17th ed.) Citation

Wolff, Joachim. Papst Pius XI. Breslau: Franke, 1939.

MLA (9th ed.) Citation

Wolff, Joachim. Papst Pius XI. Franke, 1939.

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