APA (7th ed.) Citation

Lankester, E. R. (1920). A great naturalist, Sir Joseph Hooker.

Chicago Style (17th ed.) Citation

Lankester, E. Ray. A Great Naturalist, Sir Joseph Hooker. Washington, 1920.

MLA (9th ed.) Citation

Lankester, E. Ray. A Great Naturalist, Sir Joseph Hooker. 1920.

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