International Max Planck Research School (IMPRS): Molecular Basis of PlantDevelopment and Environmental Interaction (页面存档备份,存于互联网档案馆) 50°57′35″N 6°51′35″E
Integrative Plant Anatomy. Academic Press. 2000年: 123. ISBN 0122151704. Beck, Charles B. An overview of plant structure and development. An Introduction