APA (7th ed.) Citation

Haeckel, E., & Uschmann, G. (1954). Ernst Haeckel: Forscher, Künstler, Mensch ; Briefe (o.A.). Urania-Verlag.

Chicago Style (17th ed.) Citation

Haeckel, Ernst, and Georg Uschmann. Ernst Haeckel: Forscher, Künstler, Mensch ; Briefe. o.A. Jena: Urania-Verlag, 1954.

MLA (8th ed.) Citation

Haeckel, Ernst, and Georg Uschmann. Ernst Haeckel: Forscher, Künstler, Mensch ; Briefe. o.A. Urania-Verlag, 1954.

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