Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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