APA (7th ed.) Citation

American Horticultural Society, Brickell, C., & Cole, T. J. (2002). AHS encyclopedia of plants and flowers. DK Pub..

Chicago Style (17th ed.) Citation

American Horticultural Society, Christopher Brickell, and Trevor J. Cole. AHS Encyclopedia of Plants and Flowers. New York: DK Pub., 2002.

MLA (9th ed.) Citation

American Horticultural Society, et al. AHS Encyclopedia of Plants and Flowers. DK Pub., 2002.