APA (7th ed.) Citation

Erdmann, A. (1913). Der Katholikentag ([Electronic ed.].).

Chicago Style (17th ed.) Citation

Erdmann, August. Der Katholikentag. [Electronic ed.]. 1913.

MLA (9th ed.) Citation

Erdmann, August. Der Katholikentag. [Electronic ed.]. 1913.

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