APA (7th ed.) Citation

Turner, N. J., & Szczawinski, A. F. (1999). Common poisonous plants and mushrooms of North America. Timber Press.

Chicago Style (17th ed.) Citation

Turner, Nancy J., and Adam F. Szczawinski. Common Poisonous Plants and Mushrooms of North America. Portland, Or.: Timber Press, 1999.

MLA (9th ed.) Citation

Turner, Nancy J., and Adam F. Szczawinski. Common Poisonous Plants and Mushrooms of North America. Timber Press, 1999.