APA (7th ed.) Citation

Barnes, R. S. K., & Hughes, R. N. (1982). An introduction to marine ecology. Blackwell.

Chicago Style (17th ed.) Citation

Barnes, Richard S. K., and Roger N. Hughes. An Introduction to Marine Ecology. Oxford u.a: Blackwell, 1982.

MLA (9th ed.) Citation

Barnes, Richard S. K., and Roger N. Hughes. An Introduction to Marine Ecology. Blackwell, 1982.