Mason, K. A., Losos, J. B., Singer, S. R., Raven, P. H., & Johnson, G. B. (2011). Biology (Ninth edition.). McGraw-Hill.
Cita Chicago (17th ed.)Mason, Kenneth A., Jonathan B. Losos, Susan R. Singer, Peter H. Raven, i George B. Johnson. Biology. Ninth edition. New York, NY: McGraw-Hill, 2011.
Cita MLA (9th ed.)Mason, Kenneth A., et al. Biology. Ninth edition. McGraw-Hill, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.