APA (7th ed.) Citation

Gnefkow, E., & Hesse, H. (1952). Hermann Hesse: Biographie. Kirchhoff.

Chicago Style (17th ed.) Citation

Gnefkow, Edmund, and Hermann Hesse. Hermann Hesse: Biographie. Freiburg i.Br: Kirchhoff, 1952.

MLA (9th ed.) Citation

Gnefkow, Edmund, and Hermann Hesse. Hermann Hesse: Biographie. Kirchhoff, 1952.

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