Mader, S. S. (1996). Biology (5th ed.). McGraw Hill.
Cita Chicago (17th ed.)Mader, Sylvia S. Biology. 5th ed. New York: McGraw Hill, 1996.
Cita MLA (9th ed.)Mader, Sylvia S. Biology. 5th ed. McGraw Hill, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.