APA-čujuhus (7. p.)
Gudorf, C. E., & Huchingson, J. E. (2010). Boundaries: A casebook in environmental ethics (2nd ed.). Washington, D.C..
Chicago-čujuhus (17. p.)
Gudorf, Christine E., juo James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Georgetown University Press: Washington, D.C., 2010.
MLA-čujuhus (9. p.)
Gudorf, Christine E., juo James Edward Huchingson. Boundaries: A Casebook in Environmental Ethics. 2nd ed. Washington, D.C., 2010.
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