Pechenik, J. A. (2010). A short guide to writing about biology (Seventh edition.). Longman.
Cita Chicago Style (17a ed.)Pechenik, Jan A. A Short Guide to Writing About Biology. Seventh edition. New York: Longman, 2010.
Cita MLA (9a ed.)Pechenik, Jan A. A Short Guide to Writing About Biology. Seventh edition. Longman, 2010.
Precaución: Estas citas no son 100% exactas.