(1993). Environmental dilemmas: Ethics and decisions. Chapman and Hall.
Chicago-čujuhus (17. p.)Environmental Dilemmas: Ethics and Decisions. New York: Chapman and Hall, 1993.
MLA-čujuhus (9. p.)Environmental Dilemmas: Ethics and Decisions. Chapman and Hall, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.