APA (7th ed.) Citation

Barnes, R. S. K., & Hughes, R. N. (1999). An introduction to marine ecology. Blackwell Publishing.

Chicago Style (17th ed.) Citation

Barnes, R. S. K., and R. N. Hughes. An Introduction to Marine Ecology. Malden, MA: Blackwell Publishing, 1999.

MLA (9th ed.) Citation

Barnes, R. S. K., and R. N. Hughes. An Introduction to Marine Ecology. Blackwell Publishing, 1999.