APA (7th ed.) Citation

International Association for Plant Taxonomy. Excerpta botanica. G. Fischer Verlag.

Chicago Style (17th ed.) Citation

International Association for Plant Taxonomy. Excerpta Botanica. Stuttgart: G. Fischer Verlag.

MLA (9th ed.) Citation

International Association for Plant Taxonomy. Excerpta Botanica. G. Fischer Verlag.

Warning: These citations may not always be 100% accurate.