APA (7th ed.) Citation

Cullen, J., & Davis, P. H. (1997). The identification of flowering plant families: Including a key to those native and cultivated in north temperate regions (4th ed., completely rev. and edited.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Cullen, J., and P. H. Davis. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 4th ed., completely rev. and edited. Cambridge, U.K. ; New York: Cambridge University Press, 1997.

MLA (9th ed.) Citation

Cullen, J., and P. H. Davis. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 4th ed., completely rev. and edited. Cambridge University Press, 1997.