APA (7th ed.) Citation

Haeckel, E., & McCabe, J. (1905). The wonders of life: A popular study of biological philosophy. Harper.

Chicago Style (17th ed.) Citation

Haeckel, Ernst, and Joseph McCabe. The Wonders of Life: A Popular Study of Biological Philosophy. New York: Harper, 1905.

MLA (9th ed.) Citation

Haeckel, Ernst, and Joseph McCabe. The Wonders of Life: A Popular Study of Biological Philosophy. Harper, 1905.