APA (7th ed.) Citation

Irvine, W., Darwin, C., & Huxley, T. H. (1956). Apes, angels, & Victorians: A joint biography of Darwin & Huxley. Readers Union.

Chicago Style (17th ed.) Citation

Irvine, William, Charles Darwin, and Thomas Henry Huxley. Apes, Angels, & Victorians: A Joint Biography of Darwin & Huxley. London: Readers Union, 1956.

MLA (8th ed.) Citation

Irvine, William, et al. Apes, Angels, & Victorians: A Joint Biography of Darwin & Huxley. Readers Union, 1956.