Keeton, W. T. (1980). Biological science (3d ed.). Norton.
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Chicago Style (17th ed.) Citation
Keeton, William T. Biological Science. 3d ed. New York: Norton, 1980.
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MLA引文
Keeton, William T. Biological Science. 3d ed. Norton, 1980.
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警告：這些引文格式不一定是100％准確.