APA (7th ed.) Citation

Müller-Freienfels, R. (1920). Psychologie der Religion. Psychologie der Religion.

Chicago Style (17th ed.) Citation

Müller-Freienfels, Richard. "Psychologie Der Religion." Psychologie Der Religion 1920.

MLA (8th ed.) Citation

Müller-Freienfels, Richard. "Psychologie Der Religion." Psychologie Der Religion, 1920.

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