Sadeleer, N. d. (2008). Environmental Principles. Oxford University Press.
Chicago-čujuhus (17. p.)Sadeleer, Nicholas de. Environmental Principles. New York: Oxford University Press, 2008.
MLA-čujuhus (9. p.)Sadeleer, Nicholas de. Environmental Principles. Oxford University Press, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.