APA (7th ed.) Citation

Haeckel, E. (1923). Berg- und Seefahrten. Koehler.

Chicago Style (17th ed.) Citation

Haeckel, Ernst. Berg- Und Seefahrten. Leipzig: Koehler, 1923.

MLA (9th ed.) Citation

Haeckel, Ernst. Berg- Und Seefahrten. Koehler, 1923.

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