APA (7th ed.) Citation

Darwin, C., & Wallace, A. R. (1971). Evolution by natural selection / by C. Darwin and A.R. Wallace. Johnson.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Alfred Russel Wallace. Evolution by Natural Selection / by C. Darwin and A.R. Wallace. Johnson, 1971.

MLA (9th ed.) Citation

Darwin, Charles, and Alfred Russel Wallace. Evolution by Natural Selection / by C. Darwin and A.R. Wallace. Johnson, 1971.

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