APA Edition Citation

Davis, P. H., & Cullen, J. (1979). The identification of flowering plant families, including a key to those native and cultivated in north temperate regions (2d ed.). Cambridge University Press.

Chicago Edition Citation

Davis, P. H., and J. Cullen. The Identification of Flowering Plant Families, Including a Key to Those Native and Cultivated in North Temperate Regions. 2d ed. Cambridge ; New York: Cambridge University Press, 1979.

MLA Edition Citation

Davis, P. H., and J. Cullen. The Identification of Flowering Plant Families, Including a Key to Those Native and Cultivated in North Temperate Regions. 2d ed. Cambridge University Press, 1979.