Nielsen, S. N., & Briann D. Fath and other. (2020). A New Ecology system perspective (second edition.). Elsevier.
Chicago-čujuhus (17. p.)Nielsen, Soren Nors, juo Briann D. Fath and other. A New Ecology System Perspective. second edition. united Kingdom: Elsevier, 2020.
MLA-čujuhus (9. p.)Nielsen, Soren Nors, juo Briann D. Fath and other. A New Ecology System Perspective. second edition. Elsevier, 2020.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.