APA (7th ed.) Citation

Heckmann, L., & Frensch, M. (2005). Valentin Tomberg. Valentin Tomberg Leben, Werk, Wirkung.

Chicago Style (17th ed.) Citation

Heckmann, Liesel, and Michael Frensch. "Valentin Tomberg." Valentin Tomberg Leben, Werk, Wirkung 2005.

MLA (8th ed.) Citation

Heckmann, Liesel, and Michael Frensch. "Valentin Tomberg." Valentin Tomberg Leben, Werk, Wirkung, 2005.

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