Pechenik, J. A. (1997). A short guide to writing about biology (3rd ed.). New York: Longman.
Trích dẫn kiểu ChicagoPechenik, Jan A. A Short Guide to Writing About Biology. 3rd ed. New York: Longman, 1997.
Deismireacht MLAPechenik, Jan A. A Short Guide to Writing About Biology. 3rd ed. New York: Longman, 1997.
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