APA (7th ed.) Citation

Carroll, S. B., & Salt, S. D. (2004). Ecology for gardeners. Timber Press.

Chicago Style (17th ed.) Citation

Carroll, Steven B., and Steven D. Salt. Ecology for Gardeners. Portland, Or.: Timber Press, 2004.

MLA (9th ed.) Citation

Carroll, Steven B., and Steven D. Salt. Ecology for Gardeners. Timber Press, 2004.