APA (7th ed.) Citation

Haeckel, E. H. P. A. (1918). The evolution of man: A popular scientific study. Watts.

Chicago Style (17th ed.) Citation

Haeckel, Ernst Heinrich Philipp August. The Evolution of Man: A Popular Scientific Study. London: Watts, 1918.

MLA (8th ed.) Citation

Haeckel, Ernst Heinrich Philipp August. The Evolution of Man: A Popular Scientific Study. Watts, 1918.

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