APA (7th ed.) Citation

Haeckel, E. (1906). The evolution of man. A popular scientific study. Watts & Co.

Chicago Style (17th ed.) Citation

Haeckel, Ernst. The Evolution of Man. A Popular Scientific Study. Londres: Watts & Co, 1906.

MLA (9th ed.) Citation

Haeckel, Ernst. The Evolution of Man. A Popular Scientific Study. Watts & Co, 1906.

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