APA (7th ed.) Citation

Haeckel, E. (1971). Tropenfahrten. Brockhaus.

Chicago Style (17th ed.) Citation

Haeckel, Ernst. Tropenfahrten. Leipzig: Brockhaus, 1971.

MLA (8th ed.) Citation

Haeckel, Ernst. Tropenfahrten. Brockhaus, 1971.

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