APA (7th ed.) Citation

Davis, P. H., & Cullen, J. (1989). The identification of flowering plant families: Including a key to those native and cultivated in north temperate regions (3. ed., completely rev.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Davis, Peter Hadland, and James Cullen. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 3. ed., completely rev. Cambridge u.a: Cambridge Univ. Press, 1989.

MLA (9th ed.) Citation

Davis, Peter Hadland, and James Cullen. The Identification of Flowering Plant Families: Including a Key to Those Native and Cultivated in North Temperate Regions. 3. ed., completely rev. Cambridge Univ. Press, 1989.