German Society for Plant Sciences\nRoyal Botanical Society of the Netherlands. (1999). Plant Biology. Thieme.
Chicago-referens (17:e uppl.)German Society for Plant Sciences\nRoyal Botanical Society of the Netherlands. Plant Biology. Stuttgart, Alemanha: Thieme, 1999.
MLA-referens (8:e uppl.)German Society for Plant Sciences\nRoyal Botanical Society of the Netherlands. Plant Biology. Thieme, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.