APA (7th ed.) Citation

Olby, R. C. (1967). Charles Darwin. Oxford Univ. Pr.

Chicago Style (17th ed.) Citation

Olby, Robert C. Charles Darwin. London: Oxford Univ. Pr, 1967.

MLA (9th ed.) Citation

Olby, Robert C. Charles Darwin. Oxford Univ. Pr, 1967.

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