Davis, P. H., & Cullen, J. (1989). The identification of flowering plant families: Including a key to those native and cultivated in north temperate regions (3rd ed.). Cambridge [England] ; New York: Cambridge University Press.
Chicago Style CitationDavis, P. H., and J. Cullen. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 3rd ed. Cambridge [England] ; New York: Cambridge University Press, 1989.
MLA CitationDavis, P. H., and J. Cullen. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 3rd ed. Cambridge [England] ; New York: Cambridge University Press, 1989.
Warning: These citations may not always be 100% accurate.