Beattie, A. J., & Ehrlich, P. R. (2001). Wild solutions: How biodiversity is money in the bank. Yale University Press.

Beattie, Andrew J., and Paul R. Ehrlich. Wild Solutions: How Biodiversity Is Money in the Bank. New Haven: Yale University Press, 2001.

Beattie, Andrew J., and Paul R. Ehrlich. Wild Solutions: How Biodiversity Is Money in the Bank. Yale University Press, 2001.