Dyfyniad APA
Gudorf, C. E., & Huchingson, J. E. (2010). Boundaries: A casebook in environmental ethics (2nd ed.). Washington, D.C..
Dyfyniad Arddull Chicago
Gudorf, Christine E., and James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Georgetown University Press: Washington, D.C., 2010.
Dyfyniad MLA
Gudorf, Christine E., and James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Washington, D.C., 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.