Reece, Jane B.; Urry, Lisa A.; Cain, Michael L.; Wasserman, Steven A.; Minorsky, Peter V.; Jackson, Robert B. (2013-11-10). CampbellBiology (10th ed.). Boston, Mass.: Pearson ISBN 9780321775658.
Reece, Jane B.; Urry, Lisa A.; Cain, Michael L.; Wasserman, Steven A.; Minorsky, Peter V.; Jackson, Robert B. (2013-11-10). Campbell Biology (10th ed.). Boston, Mass.: Pearson. ISBN 9780321775658.