APA (7th ed.) Citation

Sommer, N. (2009). Joseph Ratzinger: Stationen seines Lebens.

Chicago Style (17th ed.) Citation

Sommer, Norbert. Joseph Ratzinger: Stationen Seines Lebens. 2009.

MLA (9th ed.) Citation

Sommer, Norbert. Joseph Ratzinger: Stationen Seines Lebens. 2009.

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