APA Edition Citation

Heywood, V. H. (2007). Flowering plant families of the world. Royal Botanical Gardens.

Chicago Edition Citation

Heywood, V. H. Flowering Plant Families of the World. UK: Royal Botanical Gardens, 2007.

MLA Edition Citation

Heywood, V. H. Flowering Plant Families of the World. Royal Botanical Gardens, 2007.

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