Bibliografia

Principal

• Campbell, N.A. and Reece, J.B. (2005) Biology . Benjamin Cummings null
• Raven PH, Evert RF & Eichhorn SE (2005) Biology of Plants. 7ª Ed. W.H. Freeman and Companys Worth Publishers null

Secundária

• Moore R, Clark WD, Stern KR & Vodopich D (1995) Botany. WCM Publishers. London null