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.
MLA CitationPechenik, Jan A. A Short Guide to Writing About Biology. 3rd ed. New York: Longman, 1997.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.