APA (7th ed.) Citation

Turner, T., & Gothein, M. L. S. (2004). Garden history reference encyclopedia. Gardenvisit.com.

Chicago Style (17th ed.) Citation

Turner, Tom, and Marie Luise Schroeter Gothein. Garden History Reference Encyclopedia. London: Gardenvisit.com, 2004.

MLA (9th ed.) Citation

Turner, Tom, and Marie Luise Schroeter Gothein. Garden History Reference Encyclopedia. Gardenvisit.com, 2004.