APA (7th ed.) Citation

Haeckel, E. (1974). Art forms in nature / by Ernst Haeckel. Dover Publications ;.

Chicago Style (17th ed.) Citation

Haeckel, Ernst. Art Forms in Nature / by Ernst Haeckel. New York ; London: Dover Publications ;, 1974.

MLA (9th ed.) Citation

Haeckel, Ernst. Art Forms in Nature / by Ernst Haeckel. Dover Publications ;, 1974.

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