Daly, H. E., Townsend, K. N., & Boulding, K. E. (1993). Valuing the earth: Economics, ecology, ethics. MIT Press.
Chicago Style (17th ed.) CitationDaly, Herman E., Kenneth N. Townsend, and Kenneth Ewart Boulding. Valuing the Earth: Economics, Ecology, Ethics. Cambridge, Mass. [u.a.]: MIT Press, 1993.
MLA (8th ed.) CitationDaly, Herman E., et al. Valuing the Earth: Economics, Ecology, Ethics. MIT Press, 1993.
Warning: These citations may not always be 100% accurate.