Dyfyniad APA

Nielsen, S. N., & Briann D. Fath and other. (2020). A New Ecology system perspective (second edition.). Elsevier.

Dyfyniad Arddull Chicago

Nielsen, Soren Nors, and Briann D. Fath and other. A New Ecology System Perspective. second edition. united Kingdom: Elsevier, 2020.

Dyfyniad MLA

Nielsen, Soren Nors, and Briann D. Fath and other. A New Ecology System Perspective. second edition. Elsevier, 2020.

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