APA (7th ed.) Citation

Dehio, L. (1913). Innozenz IV. und England.

Chicago Style (17th ed.) Citation

Dehio, Ludwig. Innozenz IV. Und England. 1913.

MLA (9th ed.) Citation

Dehio, Ludwig. Innozenz IV. Und England. 1913.

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