International Scientific Symposium Botanic Gardens: Awareness for Biodiversity Berlin & Zippel, E. (2004). Programme and abstracts of the International Scientific Symposium Botanic Gardens: Awareness for Biodiveristy: On Friday 4th to Sunday 6th June 2004, Botanic Garden and Botanical Museum Berlin-Dahlem. Botanic Garden.
Chicago-Zitierstil (17. Ausg.)International Scientific Symposium Botanic Gardens: Awareness for Biodiversity Berlin und Elke Zippel. Programme and Abstracts of the International Scientific Symposium Botanic Gardens: Awareness for Biodiveristy: On Friday 4th to Sunday 6th June 2004, Botanic Garden and Botanical Museum Berlin-Dahlem. Berlin: Botanic Garden, 2004.
MLA-Zitierstil (9. Ausg.)International Scientific Symposium Botanic Gardens: Awareness for Biodiversity Berlin und Elke Zippel. Programme and Abstracts of the International Scientific Symposium Botanic Gardens: Awareness for Biodiveristy: On Friday 4th to Sunday 6th June 2004, Botanic Garden and Botanical Museum Berlin-Dahlem. Botanic Garden, 2004.