APA (7th ed.) Citation

Ritter, A. M. (2011). Der Heilige Geist. Athanasius Handbuch.

Chicago Style (17th ed.) Citation

Ritter, Adolf Martin. "Der Heilige Geist." Athanasius Handbuch 2011.

MLA (9th ed.) Citation

Ritter, Adolf Martin. "Der Heilige Geist." Athanasius Handbuch, 2011.

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