APA (7th ed.) Citation

Darwin, C., & Leakey, R. E. (1979). The illustrated origin of species. Hill and Wang.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Richard E. Leakey. The Illustrated Origin of Species. New York: Hill and Wang, 1979.

MLA (9th ed.) Citation

Darwin, Charles, and Richard E. Leakey. The Illustrated Origin of Species. Hill and Wang, 1979.