APA (7th ed.) Citation

Baumgartner, H. (1923). Was ist die Seele?

Chicago Style (17th ed.) Citation

Baumgartner, Hans. Was Ist Die Seele? Pfäffikon, 1923.

MLA (9th ed.) Citation

Baumgartner, Hans. Was Ist Die Seele? 1923.

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