Smith, R. L. (1995). Ecology and field biology (5th ed.). Harper Collins.
Tohutoru Kātū Chicago (17th ed.)Smith, Robert Leo. Ecology and Field Biology. 5th ed. New York: Harper Collins, 1995.
Tohutoro MLA (9th ed.)Smith, Robert Leo. Ecology and Field Biology. 5th ed. Harper Collins, 1995.
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